DARPA At Phase 2 On Human 'Regeneration' Tech

Image from It's Just Cool

From The Register:

Famed US military mad-professor bureau DARPA has inked a second deal with Massachusetts researchers to develop ways of "regenerating" human body tissues cut, shot or blown off in combat. The new biotech therapies would employ the same methods used by newts in growing replacement limbs.

News of the award comes courtesy of the Worcester Polytechnic Institute (WPI), which announced the $570,000 agreement between DARPA and WPI-spawned company CellThera yesterday. CellThera is expected to work with the university's bioengineering department in delivering Phase II of DARPA's "restorative injury repair" programme.

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Study: Brain Switches Off Rationality When Given 'Expert Advice'

From Times Online:

Financial advice can make us take leave of our senses, according to research that shows how the brain sets aside rationality when it gets the benefit of supposedly expert opinion.

When a bank manager or investment adviser recommends a financial decision, the brain tends to abdicate responsibility and defer to their authority with little independent thought, a study has suggested.

Such expert advice suppresses activity in a neural circuit that is critical to sound decision-making and value judgments, scientists in the US have found.

Their results may explain why people are so apt to follow experts’ recommendations blindly, when a little reflection might be sufficient to suggest an alternative course of action.

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Quantum Leap For Quantum Dots

Photo: Silicon nanoparticles are engineered to glow red under ultraviolet light with quantum dots or organic chemicals. (Photo courtesy of UCSD)

From North County Times:

Nanoparticles may wind up in your medicine chest, on your money.

Specks of semiconductors called quantum dots, could soon spread around the world, around us, and perhaps, even inside of us.

A few billionths of a meter in diameter, or 5,000 to the width of a human hair, quantum dots glow fluorescently in a variety of colors. Once strictly a lab curiosity, they can reveal molecular processes inside cells, detect dangerous chemicals and improve the efficiency of solar power systems.

Pioneering work on quantum dots is being performed at Carlsbad-based Life Technologies, at UC San Diego and other local biotech companies and non-profit research institutes.

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Pentagon Plan to Regrow Limbs: Phase One, Complete

(Click the Image to Enlarge)

From Danger Room:

The first phase of the Pentagon's plan to regrow soldiers' limbs is complete; scientists managed to turn human skin into the equivalent of a blastema — a mass of undifferentiated cells that can develop into new body parts. Now, researchers are on to phase two: turning that cellular glop into a square inch of honest-to-goodness muscle tissue.

The Worcester Polytechnic Institute (WPI) just got a one-year, $570,000 grant from Darpa, the Pentagon's blue-sky research arm, to grow the new tissues. "The goal is to genuinely replace a muscle that's lost," biotechnology professor Raymond Page tells Danger Room. "I appreciate that's a very aggressive goal." And it's only one part in a larger, even more ambitious Darpa program, Restorative Injury Repair, that aims to "fully restore the function of complex tissue (muscle, nerves, skin, etc.) after traumatic injury on the battlefield."

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Why Toddlers Don't Do What They're Told

From Live Science:

Are you listening to me? Didn't I just tell you to get your coat? Helloooo! It's cold out there...

So goes many a conversation between parent and toddler. It seems everything you tell them either falls on deaf ears or goes in one ear and out the other. But that's not how it works.

Toddlers listen, they just store the information for later use, a new study finds.

"I went into this study expecting a completely different set of findings," said psychology professor Yuko Munakata at the University of Colorado at Boulder. "There is a lot of work in the field of cognitive development that focuses on how kids are basically little versions of adults trying to do the same things adults do, but they're just not as good at it yet. What we show here is they are doing something completely different."

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'Ice That Burns' May Yield Clean, Sustainable Bridge To Global Energy Future

Gas hydrates, known as "ice that burns," may provide a clean, sustainable fuel source in the future. (Credit: J. Pinkston and L. Stern/US Geological Survey)

From Science Daily:

ScienceDaily (Mar. 24, 2009) — In the future, natural gas derived from chunks of ice that workers collect from beneath the ocean floor and beneath the arctic permafrost may fuel cars, heat homes, and power factories. Government researchers are reporting that these so-called "gas hydrates," a frozen form of natural gas that bursts into flames at the touch of a match, show increasing promise as an abundant, untapped source of clean, sustainable energy.

The icy chunks could supplement traditional energy sources that are in short supply and which produce large amounts of carbon dioxide linked to global warming, the scientists say.*

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Inside The Hottest Place On Earth

Erta Ale, the most active volcano in Ethiopia, is located in the Afar Region

From The BBC:

Earth scientist Dr Dougal Jerram, from Durham University, joined a BBC team to investigate the geology of the Danakil desert in northern Ethiopia - officially the hottest place on Earth. Here is his account of mapping an active volcano from inside the crater.

Like a true journey to the centre of the Earth, volcanoes provide a unique window into our planet's interior.

They provide a direct means by which our Earth cools itself, form a vital link with the developing atmosphere and can be an awesome yet terrible hazard to the people and animals that live around them.

But just how do we get into the guts of a volcano?

This is exactly what I set out to do as part of a scientific expedition into the Danakil desert.

As part of a team headed by Kate Humble, with vet Steve Leonard, medic Mukal Agarwal and biologist Richard Wiese, and a full expedition crew, we explored the region's legendary Afar tribes people, saw how the animals and man live in the extreme environment and came face to face with one of the Earth's most geologically active areas.

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Physicist Counters Climate-Change Models

Atmospheric physicist Ed Berry poses for a portrait Friday outside his home near Somers. "We are talking about something as complicated as the human body," Berry said in reference to climate change and global warming. Berry has been studying climate physics since the late 1960s. Allison Money/Daily Inter Lake

From Daily Inter Lake:

The global warming hypothesis is dead, scientifically'.

Ed Berry is making some noise about climate change, and he's singing a different tune than former Vice President Al Gore and his "Inconvenient Truth."

Berry, 73, an accomplished atmospheric physicist who recently moved to the Flathead Valley from Sacramento, Calif., was among about 700 scientists who attended the International Conference on Climate Change in New York City March 7-10.

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Rise Of The Robots--The Future Of Artificial Intelligence

Photo: PYTAK

From Scientific American:

By 2050 robot "brains" based on computers that execute 100 trillion instructions per second will start rivaling human intelligence

Editor's Note: This article was originally printed in the 2008 Scientific American Special Report on Robots. It is being published on the Web as part of ScientificAmerican.com's In-Depth Report on Robots.

In recent years the mushrooming power, functionality and ubiquity of computers and the Internet have outstripped early forecasts about technology’s rate of advancement and usefulness in everyday life. Alert pundits now foresee a world saturated with powerful computer chips, which will increasingly insinuate themselves into our gadgets, dwellings, apparel and even our bodies.

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British Scientists To Create 'Synthetic' Blood

From The Independent:

Human embryos will be used to make an unlimited supply for infection-free transfusions.

Scientists in Britain plan to become the first in the world to produce unlimited amounts of synthetic human blood from embryonic stem cells for emergency infection-free transfusions.

A major research project is to be announced this week that will culminate in three years with the first transfusions into human volunteers of "synthetic" blood made from the stem cells of spare IVF embryos. It could help to save the lives of anyone from victims of traffic accidents to soldiers on a battlefield by revolutionising the vital blood transfusion services, which have to rely on a network of human donors to provide a constant supply of fresh blood.

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Mt. Redoubt In Alaska Erupts

Video of the sixth eruption, from the Alaska Volcano observatory webcam system. (h/t to Ron De Haan)

From The Volcanism Blog:

Redoubt-watchers will be aware that the Alaska Volcano Observatory’s Hut webcam went offline during the eruption yesterday, but came back again towards the end of the afternoon. As a result images were captured of the eruptive activity - the sixth explosive event - that took place from 19:41 local time onwards yesterday.

From these webcam images Akira Shirakawa has compiled a video, with synchronized sound, that shows activity between 19:19 and 20:43, available at YouTube. Large-scale ash emission makes everything very dark around 19:50 (at video time 0:24), and a big ash eruption can be clearly seen at 20:01 (video time 0:34).

There is also a page of Hut webcam images and a time-lapse movie here (h/t Chris Rowan, via comment at Eruptions).

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Cancer Breakthrough: Tales Of 'Trojan Horse Drug' And 'Miracle Dogs'

Oscar, who scientists dubbed the "miracle dog," survived an aggressive form of cancer thanks a drug known as NO-Cbl. The drug may lead to a powerful new cancer treatment for humans. (Credit: Crandall B. Huckins)

From Science Daily:

ScienceDaily (Mar. 24, 2009) — Diagnosed with an extremely aggressive form of cancer called anal sac adenocarcinoma, Oscar's future seemed bleak. Bedridden and unresponsive to chemotherapy or radiation, he would be lucky to survive three months. But thanks to an innovative new drug treatment, Oscar's cancer receded and he was walking again within two weeks.

Oscar's recovery was extraordinary enough, but his case was unusual for another reason. Oscar is a Bichon Frise, who scientists reporting in Salt Lake City, Utah at the 237th National Meeting of the American Chemical Society on March 23 call "the Miracle Dog." Joseph A. Bauer, Ph.D., and colleagues described promising results with a drug called nitrosylcobalamin (NO-Cbl) in battling cancer in Oscar and three other canines without any negative side effects. While it gives profound hope to dog owners, NO-Cbl also points to a powerful new cancer treatment for humans — one that infiltrates cancer cells like a biological Trojan horse.

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Oldest Sea Creatures Have Been Alive 4,000 Years

Radiocarbon dating results show deep-sea "corals" with proteinaceous skeletons such as the pictured Gerardia sp. on basalt outcrop, Hawai'ian Islands, are feeding on recently exported young and fresh particulate organic matter and that individual colony longevities are on the order of thousands of years. Credit: NOAA's Hawaii Undersea Research Laboratory (HURL)

From Live Science:

Deep-sea corals are the oldest living animals with a skeleton in the seas, claims new research that found a 4,265-year-old coral species off the coast of Hawaii.

Deep-sea corals, which are threatened by climate change and pollution like shallow water corals are, grow on seamounts (mountains rising from the seafloor that don't reach the ocean's surface) and continental margins at depths of about 1,000 to 10,000 feet (300 to 3,000 meters).

These corals play host to many other marine organisms, and are hotspots of ocean biodiversity. The largest coral reef system in the world is the Great Barrier Reef off the coast of Queensland, Australia. Big reefs are also found in the Red Sea, along the coast of Mexico and Belize, the Bahamas and the Maldives.

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Laser Weapon Design Hits 100-Kilowatt Target

A Northrop Grumman Space Technology engineer in Redondo Beach, Calif., monitors a solid-state laser, in a photo from January 2007. (Credit: Northrop Grumman)

From CNET:

From the week gone by on the directed-energy weapons front: defense contractor Northrop Grumman reported that it got a solid-state laser to fire a beam with a potency of 105.5 kilowatts.

For the ray-gun wing of the military-industrial complex, the 100-kilowatt threshold is a major milestone, marking the entry point to weapons-grade laser weapons. Adding to the appeal is that solid-state lasers are much more compact, and less noxious, than chemical laser systems such as the one in the works for the 747-centric Airborne Laser.

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Dogs Show A Fetching Communication Savvy

GO FETCHFETCHING. In a re-enactment of an experiment on dogs' ability to understand human communication, a border collie watches its owner present a miniature replica of a rope toy (1), searches among the toys in an adjoining room (2) and brings the actual rope toy back to the owner (3).J. Kaminski

From Science News:

Border collies know to retrieve toys when owners present replicas or, in some cases, photos of those toys.

Dogs are lousy conversationalists and can’t write worth a lick. But don’t sell the family pooch short when it comes to grasping subtle references in human communication, a new study suggests.

Border collies quickly realize that their owners want them to fetch a toy from another room when shown a full-size or miniature replica of the desired item and given a command to “bring it here,” say biological psychologist Juliane Kaminski of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and her colleagues. Even a photograph of a toy works with some dogs as a signal to fetch that toy from an unseen location, the researchers report in an upcoming issue of Developmental Science.

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How (And Why) Athletes Go Broke

From Sports Illustrated:

Recession or no recession, many NFL, NBA and Major League Baseball players have a penchant for losing most or all of their money. It doesn't matter how much they make. And the ways they blow it are strikingly similar.

What the hell happened here? Seven floors above the iced-over Dallas North Tollway, Raghib (Rocket) Ismail is revisiting the question. It's December, and Ismail is sitting in the boardroom of Chapwood Investments, a wealth management firm, his white Notre Dame snow hat pulled down to his furrowed brow.

In 1991 Ismail, a junior wide receiver for the Fighting Irish, was the presumptive No. 1 pick in the NFL draft. Instead he signed with the CFL's Toronto Argonauts for a guaranteed $18.2 million over four years, then the richest contract in football history. But today, at a private session on financial planning attended by eight other current or onetime pro athletes, Ismail, 39, indulges in a luxury he didn't enjoy as a young VIP: hindsight.

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New Hope For Controversial 'Cold Fusion' Power Source

An experimental "cold fusion" device produced this pattern of "triple tracks" (shown at right), which scientists say is caused by high-energy nuclear particles resulting from a nuclear reaction. Credit: Pamela Mosier-Boss, Space and Naval Warfare Systems Center (SPAWAR)

From Live Science:

If cold fusion can be made to work, it could power the world cheaply on a virtually limitless supply of seawater. But scientists don't even know if it's possible.

Now a new study has produced evidence for the existence of low-energy nuclear reactions (LENR), the new name for the controversial process labeled "cold fusion" two decades ago.

Fusion is the energy source of the sun and other stars. It occurs when atomic nuclei are combined. Today's nuclear plants employ fission, the splitting of nuclei. Scientists have been striving for decades to tap fusion to produce electricity from an abundant fuel called deuterium that can be extracted from seawater. Fusion would not come with the radioactive byproducts of fission.

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Curious Pair Of Galaxies: Best Image Ever Of Strange And Chaotic Duo

This colour composite image of Arp 261 was created from images obtained using the FORS2 instrument on the ESO Very Large Telescope (VLT), at the Paranal Observatory in Chile. Located 2600 m above sea level, in the mountains of the Atacama Desert, the Paranal Observatory enjoys some of the clearest and darkest skies on the whole planet. (Credit: Image courtesy of ESO)

From Science Daily:

ScienceDaily (Mar. 23, 2009) — The ESO Very Large Telescope has taken the best image ever of a strange and chaotic duo of interwoven galaxies. The images also contain some surprises — interlopers both far and near.

Sometimes objects in the sky that appear strange, or different from normal, have a story to tell and prove scientifically very rewarding. This was the idea behind Halton Arp’s catalogue of Peculiar Galaxies that appeared in the 1960s. One of the oddballs listed there is Arp 261, which has now been imaged in more detail than ever before using the FORS2 instrument on ESO’s Very Large Telescope. The image proves to contain several surprises.

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Drink Up: Taking the Salt Out of Seawater

FREE FROM SALT: Special membranes help desalinize 25 million gallons of water a day at the Tampa Bay Seawater Desalination Plant in Florida. COURTESY OF DOW

From Scientific American:

Removing the salt from briny water is becoming more affordable.

Almost three quarters of Earth's surface is covered with water, but most of it is too salty to drink. And the 2.5 percent that is freshwater is locked up either in soil, remote snowpacks and glaciers or in deep aquifers. That leaves less than 1 percent of all freshwater for humans and animals to drink and for farmers to use to raise crops—and that remnant is shrinking as rising global temperatures trigger more droughts. The upshot: it's becoming increasingly difficult to slake the world's thirst as the population grows and water supplies dwindle. Analysts at the investment bank Goldman Sachs estimate that worldwide water use doubles every 20 years.

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The Physicists Killed Wall Street

From Discover Magazine:

A couple of weeks ago there was an interesting opinion piece in the NYTimes about how physicists are the harbingers of doom, and are responsible for the end times. Or, more specifically, it’s because of physicists that the financial markets are in tatters all around us.

The basic idea is that greedy physicists have gone to Wall Street, cooked up all sorts of arcane derivative products, and subsequently unleashed these weapons of mass destruction on the financial markets. This sentiment is best epitomized by a statement from none other than Warren Buffett (perhaps the world’s most successful investor, and certainly the world’s richest): “beware of geeks bearing formulas”

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Can Science Reveal The Truth?

From First Science:

In St John's gospel, Jesus Christ tells Pilate that he has come into the world to bear witness to the truth. To which, Pilate famously responds: "What is truth?" - a question that, for me at least, makes Pontius Pilate leap off the page as one of the most human of Biblical characters.

Perhaps the single greatest strength of science is that doesn't have to face up to the meaning of truth: Science's very methodology allows it to sidestep the whole issue of truth. The scientific method is a way of translating our individual responses to the world into something that's collective.

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A Machine That Speeds Up Evolution

Photo: Better bugs: Using a specially designed machine (shown here), scientists can rapidly engineer up to 50 genetic changes in bacteria, dramatically speeding the quest to design bacterial factories capable of efficiently producing drugs, biofuels, and other chemical products. Credit: George Church

From Technology Review:

A genome-wide approach to genetic engineering greatly speeds the manufacture of bacteria for making drugs and biofuels.

Rather than changing the genome letter by letter, as most genetic engineering is done, George Church and his colleagues have developed a new technology that can make 50 changes to a bacterial genome nearly simultaneously--an advance that could be used to greatly speed the creation of bacteria that are better at producing drugs, nutrients, or biofuels.

"What once took months now takes days," says Stephen del Cardayré, vice president of research and development at LS9, a biofuels company based in South San Francisco of which Church is a founder. LS9 soon plans to use the technology--called multiplex-automated genomic engineering, or MAGE--to accelerate development of bacterial cells that can produce low-cost renewable fuels and chemicals.

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Physics In The Oil Sands Of Alberta

Figure 1. Crushed oil-sands ore. (Photograph from Suncor Energy Inc image bank.)

From Physics Today:

Alberta’s petroleum reserves are comparable to Saudi Arabia’s, but accessing that oil poses challenges in the physics of fluids and particulates.

The recent spike in the price of oil to over US$140 per barrel focused worldwide attention on the need for more diverse supplies of fuel from unconventional sources and renewable resources. The oil sands of Alberta, the largest source of unconventional fuel for North America, are also the largest petroleum deposit on Earth. Sometimes called tar sands, they contain an estimated 2.5 trillion barrels of crude oil over an area of more than 140 000 square kilometers, but that oil, called bitumen, is too viscous to be extracted by conventional drilling. Large oil-sands deposits also exist in Venezuela, and smaller ones are found in Utah, western Africa, and Russia, but production from the Canadian deposits is the largest.

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Alaska's Mt. Redoubt Volcano Is Erupting; Large Explosions Recorded

Alaska's Mt. Redoubt Volcano, which had been in a tempestuous mood for two months,
began erupting early this morning.

From the L.A. Times:

Alaska's Mt. Redoubt Volcano, which had been in a tempestuous mood for two months, began erupting early this morning.

The Alaska Volcano Observatory recorded four large explosions at Redoubt volcano in the predawn darkness Monday, and at 7 a.m. the website anounced, "Another large explosion has just occurred."

The height of the eruption cloud is estimated to be 50,000 feet above sea level, but it remains unclear what direction the enormous plume will travel.

Two calls to the AVO/U.S. Geological Survey operations center went unanswered.

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More News On Alaska's Mt. Redoubt Volcano

Mount Redoubt Volcano Erupts Five Times, So Far -- Live Science
Alaska's Mount Redoubt erupts after weeks of waiting -- McClatchy
Alaska's Mount Redoubt has 5th eruption -- UPI
Alaska's Mount Redoubt erupts -- Examiner
Mount Redoubt blows its top -- CBS 12

Carbon Nanotube Muscles Strong As Diamond, Flexible As Rubber

From Wired News:

For the next installment of the Terminator franchise, Hollywood might skip the polymimetic liquid alloys — they're so 2003 — and turn to the laboratory of Ray Baughman, who has created a next-generation muscle from carbon nanotubes.

Baughman and his colleagues have produced a formulation that's stronger than steel, as light as air and more flexible than rubber — a truly 21st century muscle. It could be used to make artificial limbs, "smart" skins, shape-changing structures, ultra-strong robots and — in the immediate future — highly-efficient solar cells.

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Language Of Music Really Is Universal, Study Finds

A saxophonist. Native African people who have never even listened to the radio before can nonetheless pick up on happy, sad, and fearful emotions in Western music. (Credit: iStockphoto/Richard Clarke)

From Science Daily:

ScienceDaily (Mar. 20, 2009) — Native African people who have never even listened to the radio before can nonetheless pick up on happy, sad, and fearful emotions in Western music, according to a new report published online on March 19th in Current Biology. The result shows that the expression of those three basic emotions in music can be universally recognized, the researchers said.

"These findings could explain why Western music has been so successful in global music distribution, even in music cultures that do not as strongly emphasize the role of emotional expression in their music," said Thomas Fritz of the Max-Planck-Institute for Human Cognitive and Brain Sciences.

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Living Model Of Basic Units Of Human Brain Created

An isolated astrocyte shown with confocal microscopy. (Credit: Image created by Nathan S. Ivey at TNPRC / courtesy of Wikipedia)

From Science Daily:

ScienceDaily (Mar. 22, 2009) — Researchers in the School of Life & Health Sciences at Aston University in Birmingham, UK are developing a novel new way to model how the human brain works by creating a living representation of the brain.

They are using cells originally from a tumour which have been ‘reprogrammed’ to stop multiplying. Using the same natural molecule the body does to stimulate cellular development, the cells are turned into a co-culture of nerve cells and astrocytes - the most basic units of the human brain.

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Star Explodes, And So Might Theory

This artist's illustration provided by NASA shows what the brightest supernova ever recorded, known as SN 2006gy, may have looked like when it exploded. Photo: AP/NASA

From Live Science:

A massive star a million times brighter than our sun exploded way too early in its life, suggesting scientists don't understand stellar evolution as well as they thought.

"This might mean that we are fundamentally wrong about the evolution of massive stars, and that theories need revising," said Avishay Gal-Yam of the Weizmann Institute of Science in Rehovot, Israel.

According to theory, the doomed star, about 100 times our sun's mass, was not mature enough to have evolved a massive iron core of nuclear fusion ash, considered a prerequisite for a core implosion that triggers the sort of supernova blast that was seen.

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'Star Wars' Scientists Create Laser Gun To Kill Mosquitoes

From CNN:

LONDON, England -- Scientists in the U.S. are developing a laser gun that could kill millions of mosquitoes in minutes.

The laser, which has been dubbed a "weapon of mosquito destruction" fires at mosquitoes once it detects the audio frequency created by the beating of its wings.

The laser beam then destroys the mosquito, burning it on the spot.

Developed by some of the astrophysicists involved in what was known as the "Star Wars" anti-missile programs during the Cold War, the project is meant to prevent the spread of malaria.

Lead scientist on the project, Dr. Jordin Kare, told CNN that the laser would be able to sweep an area and "toast millions of mosquitoes in a few minutes."

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The New King Coal: The Unlikely Comeback Of The Mining Industry

The Dosco machine bores access routes to the coal face at Daw Mill, the most productive colliery in British history. Last year it produced 3.17 million tons of coal

From The Daily Mail:

Oil is running out, Russia controls most of Europe's gas and our weary nuclear generators are on their last legs. So what will power Britain in the future?James Delingpole reports on the unlikely comeback of coal.

'Some people can't handle it,' says the pit manager, raising his voice above the trundle of the battery-powered train and nodding to the walls of the dimly lit passageways taking us to the coal face in the Warwickshire Thick seam at Daw Mill colliery, near Coventry.

'They'll suddenly freeze and refuse to go any further.'

'What - here?' I ask, secretly thinking how pathetic that would be. So far on our descent the tunnels have been surprisingly broad and high. There's plenty of air and lots of joking, confident miners to keep spirits high.

'No. Further on. Where the tunnel starts to narrow.'

'How narrow?'

'You'll see.'

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Could A Helmet Have Saved Natasha Richardson?

Natasha Richardson. Andrew Crowley / Telegraph UK / Zuma

From Time Magazine:

There is still more speculation than information surrounding actress Natasha Richardson's fateful ski accident. Part of the confusion is the very nature of the accident — an improbable injury, little more than a head bump on a bunny slope, that has felled an otherwise healthy 45-year-old woman. It has also left onlookers wondering not just what happened to Richardson, but whether a helmet could have prevented it.

The details of Richardson's accident are sketchy, but what is known sounded benign — at first. She was taking a lesson on a beginner slope at the Mont Tremblant ski resort north of Montreal, with an instructor but without a helmet. She fell at the end of the lesson and struck her head, but was alert and conversational afterward and did not complain of any ill effects. An hour later, in her hotel room, she developed a severe headache. The next day, she was flown to Lenox Hill Hospital in New York City in critical condition, where she died on Wednesday.

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Knowing Blends Science Fact With Fiction (Beware: Spoilers!)

From Popular Mechanics:

In Knowing, numbers predict every major disaster for 50 years—and the upcoming end of the world. But just how much can scientists predict? PM talks to MIT physicist Dr. Edward Farhi to find out. Beware: Spoilers ahead!

In Knowing, Nicholas Cage plays John Kessler, an MIT astrophysicist who believes that the universe's course is caused by random events and circumstances with no grand plan—until a mysterious numerical code, unearthed from a time capsule buried for half a century, correctly predicts every major disaster of the last 50 years. The catch? It also predicts the upcoming end of the world. Knowing's plot is part real astrophysics and part mysticism; PM's Digital Hollywood got to the bottom of what is fact—and what's science fiction.

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How Pterosaurs Could Improve Robot Planes

Hop, Skip, and Away: Paleontologist Michael Habib theorizes that pterosaurs, which lived between 250 million and 65 million years ago, used their legs and wing “knuckles”—not just their hind legs, as previously believed—to leapfrog into flight. Kevin Hand

Flight School -- Popsci.com

A new take on pterosaurs could improve robot planes

If it looks like a duck and flies like a duck, it must take off like a duck. Paleontologists long speculated that this was the case for pterosaurs, but new research shows that the prehistoric winged lizards employed a smarter launch strategy, using all four limbs to hop, skip, and jump their way into flight, instead of pushing off with two legs and flapping their wings as most birds do.

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Earth's Future: Scary Ozone Scenario Thwarted

Simulations of global ozone concentration show the real-world ozone layer (left) versus a "world avoided," in which CFCs had never been banned. Reds depict high concentration; dark blues show low concentrations. Note the seasonal pulse of ozone over the poles, how it declines to holes (blue), then becomes global depletion by the 2050s. 2009 shown here. Credit: NASA Goddard's Scientific Visualization Studio

From Live Science:

If 193 nations hadn’t agreed in 1989 to ban the chemicals that eat up the Earth’s protective ozone layer, the world would have been a much different place later this century, with nearly two-thirds of the ozone layer gone and the ozone hole a permanent fixture over Antarctica, a new simulation shows.

Sunburns would occur in a matter of minutes and skin cancer-causing radiation would soar.

Ozone is the Earth's natural sunscreen, absorbing and blocking most of the incoming ultraviolet (UV) radiation from the sun and protecting life from the DNA-damaging rays.

The gas is naturally created and replenished by a photochemical reaction in the upper atmosphere where UV rays break oxygen molecules (O2) into individual atoms that then recombine into three-part molecules of ozone (O3).

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First 'Rule' Of Evolution Suggests That Life Is Destined To Become More Complex

Spiny lobster. In complex crustaceans, such as shrimps and lobsters, almost every segment is different, bearing antennae, jaws, claws, walking legs, paddles and gills. (Credit: iStockphoto/Tammy Peluso)

From Science Daily:

ScienceDaily (Mar. 18, 2008) — Researchers have found evidence which suggests that evolution drives animals to become increasingly more complex.

Looking back through the last 550 million years of the fossil catalogue to the present day, the team investigated the different evolutionary branches of the crustacean family tree.

They were seeking examples along the tree where animals evolved that were simpler than their ancestors.

Instead they found organisms with increasingly more complex structures and features, suggesting that there is some mechanism driving change in this direction.

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Robot Octopus Will Go Where No Sub Has Gone Before

From New Scientist:

INVEST €10 million in a robotic octopus and you will be able to search the seabed with the same dexterity as the real eight-legged cephalopod. At least that's the plan, say those who are attempting to build a robot with arms that work in the same way that octopuses tentacles do. Having no solid skeleton, it will be the world's first entirely soft robot.

The trouble with today's remote-controlled subs, says Cecilia Laschi of the Italian Institute of Technology in Genoa, is that their large hulls and clunky robot arms cannot reach into the nooks and crannies of coral reefs or the rock formations on ocean floors. That means they are unable to photograph objects in these places or pick up samples for analysis. And that's a major drawback for oceanographers hunting for signs of climate change in the oceans and on coral reefs.

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Another Space Walk At The Space Station

In this image from NASA TV, international crew members, from left, Japan Aerospace Exploration Agency astronaut Koichi Wakata, Russian cosmonaut Yury Lonchakov, American commander Lee Archambault and American astronaut Sandy Magnus participate in an interview while orbiting Earth, Friday, March 20, 2009. (AP Photo/NASA TV)

Astronauts Go On 2nd Spacewalk At Space Station -- Yahoo News/AP

CAPE CANAVERAL, Fla. – Astronauts took another spacewalk at the international space station Saturday, this time to lighten the workload for future crews.

As soon as they floated outside, Steven Swanson and Joseph Acaba made their way all the way to the end of the space station's power-grid framework. They loosened bolts holding down batteries that will be replaced on the next shuttle visit in June, and deployed an equipment storage platform.

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Africans Came With Columbus To New World

Skeletons that may represent the remains of crew members from Columbus' second excursion to the New World in 1493-94 were exhumed in 1990. The burials were a part of La Isabela on the island of Hispaniola, now a part of the Dominican Republic and that was the first European settlement in the New World. Credit: Fernando Luna Calderon, provided courtesy of T. Douglas Price

From Live Science:

Teeth from exhumed skeletons of crew members Christopher Columbus left on the island of Hispaniola more than 500 years ago reveal the presence of at least one African in the New World as a contemporary of the explorer, it was announced.

A team of researchers is extracting the chemical details of life history from the remains found at shallow graves at the site of La Isabela, the first European town in America, said T. Douglas Price, a University of Wisconsin-Madison professor of anthropology and leader of the team conducting an analysis of the tooth enamel of three individuals from a larger group excavated almost 20 years ago there.

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Finding Twin Earths Is Harder Than Thought

This artist's conception shows a hypothetical twin Earth orbiting a Sun-like star. A new study shows that characterizing a distant Earth's atmosphere will be difficult, even using next-generation technology like the James Webb Space Telescope. If an Earth-like world is nearby, though, then by adding observations of a number of transits, astronomers should be able to detect biomarkers like methane or ozone. (Credit: David A. Aguilar (CfA))

From Science Daily:

ScienceDaily (Mar. 21, 2009) — Does a twin Earth exist somewhere in our galaxy? Astronomers are getting closer and closer to finding an Earth-sized planet in an Earth-like orbit. NASA's Kepler spacecraft just launched to find such worlds. Once the search succeeds, the next questions driving research will be: Is that planet habitable? Does it have an Earth-like atmosphere? Answering those questions will not be easy.

Due to its large mirror and location in outer space, the James Webb Space Telescope (scheduled for launch in 2013) will offer astronomers the first real possibility of finding those answers. In a new study, Lisa Kaltenegger (Harvard-Smithsonian Center for Astrophysics) and Wesley Traub (Jet Propulsion Laboratory) examined the ability of JWST to characterize the atmospheres of hypothetical Earth-like planets during a transit, when part of the light of the star gets filtered through the planet's atmosphere. They found that JWST would be able to detect certain gases called biomarkers, such as ozone and methane, only for the closest Earth-size worlds.

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Microsoft Launches New Version Of Internet Explorer

From The Daily Mail:

Microsoft has released its latest version of Internet Explorer, which is available free to download.

Internet Explorer 8 is claimed to be a faster, more secure and innovative version of the world's most popular browser.

Steve Ballmer, the chief executive officer of Microsoft, said: ‘With Internet Explorer 8, we are delivering a browser that gets people to the information they need, fast, and provides protection that no other browser can match.’

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Strange Particle Created; May Rewrite How Matter's Made

A particle detector as big as a three-story house records the "debris" emerging from high-energy proton-antiproton collisions in the Fermi National Accelerator Laboratory. Data from such detectors revealed an unexpected new subatomic particle that may break all known rules governing how matter is created, scientists said in March 2009. Image courtesy Fermilab

From National Geographic:

An unexpected new subatomic particle has been discovered in Illinois's Fermilab atom smasher, scientists announced this week.

The new particle may break all known rules for creating matter, say the researchers who created the oddity.

Y(4140)—as the new particle has been dubbed—couldn't have formed through either of the two known models for matter creation. Researchers aren't even sure what Y(4140) is made of.

It's long been accepted that six different "flavors" of particles called quarks combine to form larger subatomic particles.

In one method, a quark pairs with one of its opposites, an antiquark, to create a type of matter called a meson. In the second method, three quarks gather to form baryons, such as protons and neutrons.

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Romeo And Juliet's Balcony Opens For Weddings

Well-Worn Juliet Statue
The House of Juliet is the 13th century family home of the Cappello family who, according to legend, were the Capulets of Shakespeare's "Romeo and Juliet." The house will soon be used as a venue for weddings. This is the statue of Juliet in the courtyard of the house. The current tradition for couples is to stroke the right breast of the languid bronze statue and then leave love notes on the house's walls. Rossella Lorenzi

From Discover:

March 20, 2009 -- The House of Juliet, with the legendary balcony where Juliet Capulet is said to have pined for Romeo, will soon be used as a venue for weddings, city officials in Verona have announced.

The 13th century family home of the Cappello family who, according to legend, were the Capulets of Shakespeare's tragic play, has been always a place of pilgrimage for lovers from all over the world.

The tradition for couples is to first stroke the right breast of the languid bronze statue of Juliet in the courtyard -- the gesture is believed to bring good luck -- then leave love notes on the house's walls and Gothic wooden doors.

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Pink Elephant Is Caught On Camera

The little pink calf was spotted in amongst an 80-strong elephant herd

From The BBC:

A pink baby elephant has been caught on camera in Botswana.

A wildlife cameraman took pictures of the calf when he spotted it among a herd of about 80 elephants in the Okavango Delta.

Experts believe it is probably an albino, which is an extremely rare phenomenon in African elephants.

They are unsure of its chances of long-term survival - the blazing African sunlight may cause blindness and skin problems for the calf.

Mike Holding, who spotted the baby while filming for a BBC wildlife programme, said: "We only saw it for a couple of minutes as the herd crossed the river.

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Go Play Outside To Recharge Yourself

Interviewees: John Jonides and Marc Berman, University of Michigan
Produced by Jack Penland– Edited by James Eagan
Copyright © ScienCentral, Inc

From ScienCentral:

Feeling like you’re suffering from brain drain and you can’t concentrate? Psychologists have now found out that taking some time to interact with nature, even in cold weather, can make you a bit smarter.

Mother Knows Best

Are you feeling the strain of work? Have you lost focus and is your mind feeling about as sharp as the wooden rulers you had in elementary school? Scientists have some advice for you. Advice, it turns out, that your mother already told you a long time ago: Go play outside.

But, it turns out mother was only partly right. John Jonides, University of Michigan professor of psychology and neuroscience, and graduate student Marc Berman have one big condition to that advice: A walk in nature sharpens the mind, but a walk in the city does not.

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Two Dying Red Supergiant Stars Produced Supernovae

The Crab nebula is the result of a type II supernova explosion observed by Chinese astronomers in 1054. The nebula consists of the outer parts of a red supergiant that exploded after having burned all its fuel. The nebula is still expanding into the surrounding interstellar medium with velocities of several thousand kilometers per second. In the middle of the nebula there is a neutron star, which is the collapsed central, dead core of the exploded star. (Credit: Hubble Space Telescope)

From Science Daily:

ScienceDaily (Mar. 20, 2009) — Where do supernovae come from? Astronomers have long believed they were exploding stars, but by analysing a series of images, researchers from the Dark Cosmology Centre at the Niels Bohr Institute, University of Copenhagen and from Queens University, Belfast have proven that two dying red supergiant stars produced supernovae. The results are published in the journal Science.

A star is a large ball of hot gas and in its incredibly hot interior hydrogen atoms combine to form helium, which subsequently forms carbon, other heavier elements and finally iron. When all the atoms in the centre have turned to iron the fuel is depleted and the star dies. When very large and massive stars, that are at least about eight times as massive as our sun, die, they explode as supernovae.

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More People In Love Than Previously Thought

From Live Science:

Romeo and Juliet would approve: A new study found that romantic love can stand the test of time.

Though it is widely held that romance and sex must ultimately yield to friendly companionship over time, new research found that's not the case. Instead about 13 percent of people reported high levels of romance in their long-term relationships, in a new study published in the March issue of the journal Review of General Psychology.

Researchers analyzed data from surveys of more than 6,000 people, including some in newly-formed pairs and many in marriages of more than 20 years. The scientists found that a surprisingly high number of people were still very much in love with their long-term partners, though the researchers drew a distinction between romantic love, which can endure, and passionate or obsessive love, which often fades after the beginning of a relationship.

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Liquid Saltwater Is Likely Present On Mars, New Analysis Shows

Droplets on a leg of the Mars Phoenix lander are seen to darken and coalesce. Nilton Renno, a professor in the Department of Atmospheric, Oceanic and Space Sciences says this is evidence that they are made of liquid water. (Credit: NASA/JPL-Caltech/University of Arizona/Max Planck Institute)

From Science Daily:

ScienceDaily (Mar. 20, 2009) — Salty, liquid water has been detected on a leg of the Mars Phoenix Lander and therefore could be present at other locations on the planet, according to analysis by a group of mission scientists led by a University of Michigan professor. This is the first time liquid water has been detected and photographed outside the Earth.

"A large number of independent physical and thermodynamical evidence shows that saline water may actually be common on Mars," said Nilton Renno, a professor in the U-M Department of Atmospheric, Oceanic and Space Sciences and a co-investigator on the Phoenix mission.

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The Quest To Make Hydrogen The Fuel Of The Future

The world's first hydrogen fuel station in Reykjavik, Iceland, April 2003.
Photo supplied by about.com

From NOVA:

Australia and many other countries around the world are preparing for hydrogen to take over from fossil fuels such as oil and natural gas, and move to what's being called the 'hydrogen economy'. But there are some big hurdles to overcome before it can happen.

You may not realise it, but scientists, the energy industry, governments and climate change experts around the world have joined forces and are on a global quest - and a race against time. Their goal is to find an economical, practical and safe form of energy to replace our reliance on fossil fuels.

Hydrogen, the most abundant element in the Universe, is one potential candidate. Many regard it as the ultimate 'clean, green' fuel because when it burns in oxygen, only heat and water are created.

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If Galaxies Are All Moving Apart, How Can They Collide?

This Hubble Space Telescope image shows a collision between two spiral galaxies, NGC 6050 and IC 1179, in the Hercules constellation. NASA, ESA and HUBBLE HERITAGE

From Scientific American:

Cosmologist Tamara Davis, a research fellow at the University of Queensland in Australia and an associate of the Dark Cosmology Center in Denmark, brings together an answer:

The dynamics of the universe are governed by competing forces whose influence varies with scale, so local forces can override universal forces in discrete regions. On scales larger than galaxy clusters, all galaxies are indeed moving apart at an ever increasing rate. The mutual gravitational attraction between two galaxies at that distance is too small to have a significant effect, so the galaxies more or less follow the general flow of the expansion. But it is a different story in a galaxy's local neighborhood. There the gravitational attraction can be very significant and the interactions much more exciting.

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Schools Of Robofish To Sniff Out Pollution In The Thames

Green robofish: The pollutant-seeking robots will be based on this model at the London Aquarium, with sensors to detect contaminants and GPS navigation

From The Daily Mail:

Schools of robotic fish could be sent into the Thames to produce a 3D pollution map of the river.

Researchers at the University of Essex in Colchester are working on the robofish as part of a £2.5million EU-funded project to find new ways of monitoring water waste.

Each fish will be about 50cm long, 15cm high and 12cm wide. They will be packed with pollution sensors that can electronically 'sniff' harmful chemicals in the water.

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Chris Anderson: Web Creating Free Economy

From Times Online:

Digital technology is offering consumers better deals and reshaping economic theory, says the author of The Long Tail

The "free economy", where businesses give away their products to make money, is spreading fast thanks to the recession and the increasing reach of digital technology, according to the author Chris Anderson.

Mr Anderson, whose acclaimed book The Long Tail is about how the digital revolution allows businesses to profit from selling small quantities of relatively unpopular items, said that consumers with less in their pockets were looking for bargains, making the free business strategy even more attractive.

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Genesis For Exploding Stars Confirmed

The Crab nebula is the result of a type II supernova explosion observed by Chinese astronomers in 1054. The nebula consists of the outer parts of a red supergiant that exploded after having burned all its fuel. Credit: Hubble Space Telescope

From Live Science:

Telescope images have confirmed something astronomers have long suspected, that red supergiant stars are the stars that explode in so-called type II supernovas.

Type II supernovas are the impressive cosmic explosions that result from the internal collapse of a massive star. (For this reason, they are also known as core-collapse supernovas.)

On average, a supernova will occur about once every 50 years in a galaxy the size of the Milky Way. But scientists don't know when these stellar powder kegs will blow, so identifying the star that birthed them, called the progenitor star, can be tricky.

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Tongan Inspection Team Heads To Undersea Volcano

From Yahoo News/AP:

NUKU'ALOFA, Tonga – Scientists sailed Thursday to inspect an undersea volcano that has been erupting for days near Tonga — shooting smoke, steam and ash thousands of feet (meters) into the sky above the South Pacific ocean.

Authorities said Thursday the eruption does not pose any danger to islanders at this stage, and there have been no reports of fish or other animals being affected.

Spectacular columns are spewing out of the sea about 6 miles (10 kilometers) from the southwest coast off the main island of Tongatapu — an area where up to 36 undersea volcanoes are clustered, geologists said.

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More News On The Tonga Volcano

Tonga volcano spews spectacular plume into South Pacific sky -- Scientific American
Underwater volcano erupts off Tonga -- BBC
Tongan Eruption, Quake, Tsunami Alert -- New York Times
Underwater volcano sends huge columns of ash into Pacific sky -- Times Online