Tweak Gravity: What If There Is No Dark Matter?

INVISIBLE OR NONEXISTENT? A composite image of the galaxy cluster Abell 520 shows the inferred presence of matter, primarily dark matter, in blue. X-ray: NASA/CXC/UVic./A.Mahdavi et al.; Optical/Lensing: CFHT/UVic./A.Mahdavi et al.

From Scientific American:

Modifications to the theory of gravity could account for observational discrepancies, but not without introducing other complications.

Theorists and observational astronomers are hot on the trail of dark matter, the invisible material thought to account for puzzling mass disparities in large-scale astronomical structures. For instance, galaxies and galactic clusters behave as if they were far more massive than would be expected if they comprised only atoms and molecules, spinning faster than their observable mass would explain. What is more, the very presence of assemblages such as our Milky Way Galaxy speaks to the influence of more mass than we can see. If the mass of the universe were confined to atoms, the clumping of matter that allowed galaxies to take shape would never have transpired.

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Carl Sagan Day Celebrated At Florida University

From The Telegraph:

The first Carl Sagan Day is being celebrated at Broward College, Florida, in honour of the great astronomer, novelist and sceptic.

The Pulitzer Prize-winning author, who died in 1996, would have turned 75 on Monday 9 November 2009. Broward College is to hold a day of activities and talks in his memory.

The university, near Davie, Florida, held planetarium shows and star-gazing, as well as a talk by the magician and sceptic James Randi, a friend of Dr Sagan.

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A Neutron Star Is Born: Stellar Core Just 12 Miles Across Spotted 11,000 Light Years Away

This supernova was captured by Nasa's Chandra X-Ray Observatory. The neutron star is the blue dot at the centre of the picture

From The Daily Mail:

An infant neutron star, the super-dense core of a stellar explosion, has been observed for the first time.

The 12.4 mile-wide object is the youngest object of its kind ever discovered, having appeared just 330 years ago.

It has been cloaked in mystery since it was identified as a powerful X-ray source in 1999. Astronomers now know the source is a neutron star 11,000 light years from Earth at the centre of the supernova Cassiopeia A.

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Coffee Brims With Health Benefits, Researchers Say

From Sci-Tech Today:

Although caffeine might be considered the "active ingredient" in coffee, coffee is only two percent caffeine and 98 percent "other stuff," including more than 1,000 different compounds such as vitamins, minerals and amino acids. It even contains fiber. Each cup contains the kind that helps prevent cholesterol from being absorbed by the intestines.

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F1 Designer Unveils Electric Car

Photo: Science and Innovation Minister Lord Drayson test drives the T.27

From The BBC:

An electric car created by the McLaren F1 'supercar' road car designer Gordon Murray has been unveiled.

Three prototypes of the T.27 model will be developed over the next 16 months.

The manufacturing process, called iStream, has received £9m of investment, half of which came from the government's Technology Strategy Board.

iStream plants can be just one fifth of the size of a conventional car factory, as the cars are not made from stamped steel.

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Are The Alps Growing Or Shrinking?

The Matterhorn, in the Alps. (Credit: iStockphoto)

From Science Daily:

Science Daily (Nov. 6, 2009) — The Alps are growing just as quickly in height as they are shrinking. This paradoxical result comes from a new study by a group of German and Swiss geoscientists.

Due to glaciers and rivers, about exactly the same amount of material is eroded from the slopes of the Alps as is regenerated from the deep Earth's crust. The climatic cycles of the glacial period in Europe over the past 2.5 million years have accelerated this erosion process. In the latest volume of the science magazine Tectonophysics ( No. 474, S.236-249) the scientists show that today's uplifting of the Alps is driven by these strong climatic variations.

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A Simple Sneeze Raises Fear of Death

From Live Science:

In the current atmosphere of heightened concern over the H1N1 virus, the everyday sneeze can trigger fears of totally unrelated hazards, including heart attacks, new research suggests.

An everyday achoo reminds people that swine flu is lurking, the researchers found. That intensifies worries about flu. From there, people rely on current feelings to assess unrelated health risks and even policy decisions, the study found.

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Giant Crack In Africa Formed In Just Days

A 500-metre-long crack opened up in just a few days in Afar, Ethiopia, in 2005
(Image: University of Rochester)

From The New Scientist:

A crack in the Earth's crust – which could be the forerunner to a new ocean – ripped open in just days in 2005, a new study suggests. The opening, located in the Afar region of Ethiopia, presents a unique opportunity for geologists to study how mid-ocean ridges form.

The crack is the surface component of a continental riftMovie Camera forming as the Arabian and African plates drift away from one another. It began to open up in September 2005, when a volcano at the northern end of the rift, called Dabbahu, erupted.

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TV Switch-Over Triggers Rush To See Rare Stars

The skies are ours, for now: the Arecibo Observatory has a window of opportunity to view the sky at frequencies previously masked by TV (Image: Seth Shostak/SPL)

From New Scientist:

US SKIES are clearer than usual after the switch in June from analogue to digital TV freed up a chunk of the radio spectrum. Astronomers are now rushing to see what they can find before transmissions from cellphone companies and others fill the space.

Prior to the switch-over, naturally occurring radio waves at frequencies between 700 and 800 megahertz were obscured by analogue TV signals, preventing astronomers from investigating the universe using this band. Now a receiver has been installed at the Arecibo Observatory in Puerto Rico to take advantage of the new-found clarity.

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Wearable Artificial Intelligence Could Help Astronauts Troll Mars for Signs of Life

Cyborg Eyes Tests on the cyborg astrobiologist suit involve real-time color-based novelty detection using a field-capable digital microscope. An AI integrated spacesuit using the technology could help a manned mars mission search for sign of life on Mars' hostile surface. P.C. McGuire, arXiv:0910.5454.

From Popular Science:

Not since RoboCop has being a cyborg seemed so very cool. University of Chicago geoscientists are developing an artificial intelligence system that future Mars explorers could incorporate into their spacesuits to help them recognize signs of life on Mars' barren surface.

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Out Of The Blue: Islands Seen From Space

From Wired Science:

Islands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island from its sandy beaches, or a volcanic island from its towering peaks is wonderful, experiencing them from above can be inspiring as well.

We’ve collected images taken by astronauts and satellites from space of some of the most interesting islands on the planet.

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Methane Maps Step One for Energy Prospectors

From Popular Mechanics:

A team of geologists recently found hundreds of plumes of methane gas—a potent greenhouse gas and potential energy source—in the Arctic Ocean, indicating there may be more methane being released from deep in the ocean than expected. Here is a look at the recent findings and the known sources of methane out today.

An international team of scientists has found hundreds of methane gas plumes in the depths of the Arctic Ocean. German and English researchers used sonar to detect 250 columns of bubbles pushing out of the seabed of West Spitsbergen and then sampled the water in those areas, finding that the gas was predominantly methane. The discovery indicates there may be more of the gas being released and from deeper areas of the Arctic seabed than expected.

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PICTURES: "Extraordinary" Ancient Skeletons Found

Photograph courtesy Saxony-Anhalt State Office for Heritage Management and Archaeology

From National Geographic:

This "extraordinary" skeleton of a woman buried in a seated position was discovered during an archaeological survey before the planned construction of a high-speed train track in central Germany, scientists said in a statement.

The woman, who lived in the early Bronze Age (roughly 2200 to 1600 B.C.), was found near the town of Bad Lauchstadt and is one of several burials found so far during the dig, which runs from September 2008 to June 2010.

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Large Hadron Collider Stalled Again... Thanks To Chunk Of Baguette

A spokesman for CERN told The Times: 'Nobody knows how it got there. The best guess is that it was dropped by a bird, either that or it was thrown out of a passing aeroplane'

From Times Online:

The rehabilitation of the beleaguered Large Hadron Collider was on hold tonight after the failure of one of its powerful cooling units caused by an errant chunk of baguette.

The £4 billion particle-collider faced more than a year of delays after a helium leak stymied the project in its first few days of operation. It is gradually being switched back on over the coming months but suffered a new setback on Tuesday morning.

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Dead Star Encased in Diamond Shroud

An unusual neutron star appears to be covered in a thin atmosphere of carbon. Cassiopeia A appears in this photo, with the neutron star at its center highlighted in the right-hand corner. Chandra image: NASA/CXC/Southampton/W.Ho; Illustration: NASA/CXC/M.Weiss

From Discovery News:

Astronomers have just solved a decade-old mystery that explains the unusual behavior of a neutron star -- the dense, hot corpse left behind after a massive stellar explosion -- at the center of the Cassiopeia A supernova remnant.

It wasn't the X-rays streaming from the center of the supernova remnant that astronomers found puzzling. It's why the beams weren't pulsating as expected. Now the scientists know why: The neutron star is covered with a thin atmosphere of carbon, which acts like a giant bulb to smooth light in all directions.

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Vast Stars Fed Biggest Black Holes

Supermassive black holes are found at the centre of galaxies. Credit: NASA/JPL-Caltech

From Cosmos:

SYDNEY: Stars more than one million times as massive as the Sun may be more stable than astronomers thought, and have created seeds that grew into the largest supermassive black holes.

Supermassive black holes are found at the centre of most galaxies, including our own Milky Way. Theories about their formation range from collapsing clouds of gas to collisions between smaller black holes.

Astrophysicists have also suggested that supermassive black holes could have formed from the catastrophic collapse of incredibly large stars that were one million to one billion times the mass of the Sun.

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Spinal Cord Regeneration Enabled By Stabilizing, Improving Delivery Of Scar-degrading Enzyme

Image showing the extent of new nerves (green) that regenerated after treatment with the enzyme. (Credit: Image courtesy of Ravi Bellamkonda)

From Science Daily:

Science Daily (Nov. 5, 2009) — Researchers have developed an improved version of an enzyme that degrades the dense scar tissue that forms when the central nervous system is damaged. By digesting the tissue that blocks re-growth of damaged nerves, the improved enzyme -- and new system for delivering it -- could facilitate recovery from serious central nervous system injuries.

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The Many Mysteries of Neanderthals

Comparison between Neanderthal and modern human skeletons. Photo: K. Mowbray, Reconstruction: G. Sawyer and B. Maley, Copyright: Ian Tattersall

From Live Science:

We are currently the only human species alive, but as recently as maybe 24,000 years ago another one walked the earth — the Neanderthals.

These extinct humans were the closest relatives we had, and tantalizing new hints from researchers suggest that we might have been intimately close indeed. The mystery of whether Neanderthals and us had sex might possibly get solved if the entire Neanderthal genome is reported soon as expected. The matter of why they died and we succeeded, however, remains an open question.

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How The Elephant Got Its Trunk (And Other Wonders Of Nature)

'No one has ever really known how the elephant got its trunk, or how the leopard got its spots. This project will lay the foundation for work that will answer those questions and many others,' says Dr David Haussler

From The Independent:

Nobel laureate to reveal secrets of evolution via massive gene-mapping project.

An ambitious plan to map the genomes of 10,000 species of vertebrates – animals with backbones – has been announced by scientists.

Unravelling the DNA sequences of the many species of vertebrates will help science to explain how the leopard got its spots, how the elephant came by its trunk and how the bat learned to fly, the researchers said.

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Spraying On Skin Cells To Heal Burns

Photo: Spray-on skin: In a unique treatment for second-degree burns, surgeons harvest a small number of skin cells through a skin biopsy, suspend them in solution, and then spray the resulting mixture onto a burn wound. Once in place, skin stem cells, called basal cells, proliferate to create a new layer of skin. Credit: ReCell

From Technology Review:

A new technique in burn treatment provides an alternative to skin grafts in the operating room.

Traditionally, treatment for severe second-degree burns consists of adding insult to injury: cutting a swath of skin from another site on the same patient in order to graft it over the burn. The process works, but causes more pain for the burn victim and doubles the area in need of healing. Now a relatively new technology has the potential to heal burns in a way that's much less invasive than skin grafts. With just a small skin biopsy and a ready-made kit, surgeons can create a suspension of the skin's basal cells--the stem cells of the epidermis--and spray the solution directly onto the burn with results comparable to those from skin grafts.

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I Can Has Swine Flu? A Cat Comes Down with H1N1

Photo: Michael Waine / Corbis

From Time Magazine:

For all the attention that has whirled around H1N1 in recent months, it seems that one vulnerable, and furry, population may have been overlooked: the family pet.

On Wednesday, the Iowa Department of Public Health reported the first confirmed case of H1N1 in a house pet, a 13-year-old domestic shorthaired cat. The animal likely contracted the virus from its owners, veterinarians say, since two of the three family members living in the cat's household had recently suffered from influenza-like illness. Late last week, when the cat came down with flu-like symptoms — malaise, loss of appetite — its owners brought it to Iowa State University College of Veterinary Medicine for treatment. The family mentioned to the vet that they had also recently battled illness, which led to testing the pet for H1N1.

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Policy Decisions Slow H1N1 Vaccine Production

From Future Pundit:

Why is H1N1 influenza vaccine coming out so slowly in the United States? Dr. Scott Gottlieb, a former FDA deputy commissioner, says a few policy decisions slow the production of vaccine.

Why do adjuvants matter? An adjuvanted H1N1 vaccine being used in Europe contains 3.75 micrograms of vaccine stock. The same vaccine in the U.S., without the adjuvant, requires 15 micrograms of vaccine for equal potency. If we used adjuvants, we could have had four times the number of shots with the same raw material.

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A Language of Smiles

From The New York Times:

Say “eeee.” Say it again. Go on: “eeee.”

Maybe I’m easy to please, but doing this a few times makes me giggle. “Eeee.”

Actually, I suspect it’s not just me. Saying “eeee” pulls up the corners of the mouth and makes you start to smile. That’s why we say “cheese” to the camera, not “choose” or “chose.” And, I think, it’s why I don’t get the giggles from “aaaa” or “oooo.”

The mere act of smiling is often enough to lift your mood; conversely, the act of frowning can lower it; scowling can make you feel fed up. In other words, the gestures you make with your face can — at least to some extent — influence your emotional state.

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In the Mediterranean, Killer Tsunamis From an Ancient Eruption

From The New York Times:

The massive eruption of the Thera volcano in the Aegean Sea more than 3,000 years ago produced killer waves that raced across hundreds of miles of the Eastern Mediterranean to inundate the area that is now Israel and probably other coastal sites, a team of scientists has found.

The team, writing in the October issue of Geology, said the new evidence suggested that giant tsunamis from the catastrophic eruption hit “coastal sites across the Eastern Mediterranean littoral.” Tsunamis are giant waves that can crash into shore, rearrange the seabed, inundate vast areas of land and carry terrestrial material out to sea.

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The New Science of Temptation

Lev Dolgatshjov

From Scientific American:

What happens when Harvard scientists use a brain scanner to look for the devil inside?

The power to resist temptation has been extolled by philosophers, psychologists, teachers, coaches, and mothers. Anyone with advice on how you should live your life has surely spoken to you of its benefits. It is the path to the good life, professional and personal satisfaction, social adjustment and success, performance under pressure, and the best way for any child to avoid a penetrating stare and a cold dinner. Of course, this assumes that our natural urges are a thing to be resisted – that there is a devil inside, luring you to cheat, offend, err, and annoy. New research has begun to question this assumption.

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The World’s 18 Strangest Bridges: Gallery

From Popular Mechanics:

Some bridges are engineered with nothing but utility in mind—for these, aesthetic design is secondary to safety and longevity. And given that San Francisco's Bay Bridge was just closed for six days, this makes sense. But advances in design software and construction materials have given bridge architects opportunities to focus on original, striking and sometimes whimsical designs that impress, while keeping function in mind. Here are some of our favorite unusual bridges'and why they're architecturally striking.

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Object-Detection Software To Enable Search Within Videos

People Detector Where's Elvis? Tony Han/MU

From Popular Science:

Detection algorithms help computers find humans, or anything else, in YouTube videos or surveillance footage.

Imagine running a Google search for basketball videos, and having your computer sift through actual footage of online videos rather than just the text of the descriptions. A new type of software could enable computers to run searches inside videos, and pick out humans and objects alike.

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80 Min Exercise Per Week Prevents Visceral Weight Gain

From Future Pundit:

Fat around your internal organs is thought to be a much bigger risk factor for heart disease than fat near the surface of the skin. Well, if you go on a diet, exercise, get your weight down, and then eventually go off the diet continued exercise will prevent the resulting weight gain from happening where the risk factor is greatest.

BIRMINGHAM, Ala. - A study conducted by exercise physiologists in the University of Alabama at Birmingham (UAB) Department of Human Studies finds that as little as 80 minutes a week of aerobic or resistance training helps not only to prevent weight gain, but also to inhibit a regain of harmful visceral fat one year after weight loss.

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Speed Limit To The Pace Of Evolution, Biologists Say

E. coli growing in a petri dish. (Credit: iStockphoto/Linde Stewart)

From Science Daily:

Science Daily (Nov. 3, 2009) — Researchers at the University of Pennsylvania have developed a theoretical model that informs the understanding of evolution and determines how quickly an organism will evolve using a catalogue of "evolutionary speed limits." The model provides quantitative predictions for the speed of evolution on various "fitness landscapes," the dynamic and varied conditions under which bacteria, viruses and even humans adapt.

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Recent Midwest Quakes Called Aftershocks From 1800s

Each cross marks an earthquake recorded in the New Madrid seismic zone since 1974

From Live Science:

The small earthquakes that sporadically rattle the central United States may actually be aftershocks from a few extremely large quakes that occurred in the region almost 200 years ago, according to a new study

The New Madrid Earthquakes, which struck between December 1811 and February 1812, are some of the strongest seismic events ever to occur in the contiguous United States in recorded history. The largest quake is estimated to have been 8.0 in magnitude and was powerful enough to temporarily make the Mississippi River flow backwards. The heart of the seismic activity was near the town of New Madrid, Missouri, close to the Kentucky and Tennessee borders.

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Taste Test: The Biotechnology Of Wine

One of life's pleasures (Image: Carlos Navajas/Getty)

From The new Scientist:

Wine-making is one of the oldest and most influential forms of biotechnology. People have drunk wine down the millennia for all sorts of reasons: it provides a safer more nutritious alternative to water, a social lubricant, a mind-altering medicinal, a ceremonial drink or even a source of inspiration. Above all else, wine is one of life's great pleasures.

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Implantable Silicon-Silk Electronics

Image: Silicon on silk: This clear silk film, about one centimeter squared, has six silicon transistors on its surface. These flexible devices can be implanted in mice like the one in this image without causing any harm, and the silk degrades over time. The orange liquid on the hair is a disinfectant used during the surgery. Credit: Rogers/Omenetto

From Technology Review:

Biodegradable circuits could enable better neural interfaces and LED tattoos.

By building thin, flexible silicon electronics on silk substrates, researchers have made electronics that almost completely dissolve inside the body. So far the research group has demonstrated arrays of transistors made on thin films of silk. While electronics must usually be encased to protect them from the body, these electronics don't need protection, and the silk means the electronics conform to biological tissue. The silk melts away over time and the thin silicon circuits left behind don't cause irritation because they are just nanometers thick.

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Great White Sharks 'Hang Out' Together

Researchers have found that great white sharks return to the same areas to hold annual meetings
Photo: BARCROFT

From The Telegraph:

Great white sharks, previously thought to be solitary hunters scouring the seas for prey, may also have a sociable side.

Researchers have found that the fearsome predators return to the same areas to hold annual meetings, congregating to forage or mate together in their hundreds if not thousands.

One "hotspot", between Hawaii and Mexico, is so popular that the scientists have named it the "white shark cafe".

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X-ray Voted Most Important Modern Discovery By Public

Photo: X-rays can reveal broken bones and build up more detailed pictures of outer space.

From The Daily Mail:

The X-ray has been voted the most important modern discovery by the British public, in a Science Museum poll.

The antibiotic agent penicillin came second followed by the DNA double helix.

Nearly 50,000 visitors voted for the greatest achievements in science, engineering and technology from a shortlist drawn up by museum curators.

The poll, one of the events marking the museum's centenary year, singled out the X-ray machine as the scientific advance with the greatest impact.

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Space Hotel 'On Schedule To Open In 2012'

An artist's impression of the flight, displayed on Galactic Suite's website. Galactic Suite

From The Independent:

A company behind plans to open the first hotel in space says it is on target to accept its first paying guests in 2012 despite critics questioning the investment and time frame for the multi-billion dollar project.

The Barcelona-based architects of The Galactic Suite Space Resort say it will cost 3 million euro (£2.6 million) for a three-night stay at the hotel, with this price including an eight-week training course on a tropical island.

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India's Space Ambitions Taking Off

Indian Space Research Organisation, via European Pressphoto Agency

From Washington Post:

Nation plans astronaut-training center, manned space mission as it seeks higher profile.

PANNITHITTU, India -- In this seaside village, the children of farmers and fishermen aspire to become something that their impoverished parents never thought possible: astronauts.

Through community-based programs, India's space agency has been partnering with schools in remote areas such as this one, helping to teach students about space exploration and cutting-edge technology. The agency is also training thousands of young scientists and, in 2012, will open the nation's first astronaut-training center in the southern city of Bangalore.

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Gene-Makers Put Forward Security Standards

From Scientific American:

But few companies are willing to sign up yet.

Several gene-synthesis companies yesterday finalized a code of conduct that outlines how to screen orders for synthetic DNA that could be used for terrorist activities.

The code, which has been in the works from the International Association of Synthetic Biology (IASB) in Heidelberg, Germany, for a year and a half, reflects for the most part what has become common practice in gene-synthesis companies. Before filling orders, the firms compare the gene sequences with those from organisms on lists of pathogens, such as the US Centers for Disease Control and Prevention's select-agents list. Most companies then follow up 'hits' with human investigation of whether the match is valid and the purchaser is legitimate.

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The Hidden Uses of Everyday Explosives

Impact Study The slug and gunpowder have been removed from the cartridge, so it’s only the primer that’s going off when it’s hit from below by the point of a center punch (triggered by pulling a string from a safe distance). Mike Walker

From Popular Science:

When you stop and look, you may be surprised to find yourself surrounded by all kinds of explosives--some that detonate easier than dynamite.

The explosive C4, a favorite for everything from demolition to terrorism to action movies, is in fact one of the safest explosives. How can an explosive be safe? If it’s hard to set off by accident. C4 is so stable that you can light it with a match (it burns but does not explode) or shoot it (it splatters but does not explode). To go bang, it requires a detonator that produces both heat and shock.

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Shedding Light On The Cosmic Skeleton

Astronomers have tracked down a gigantic, previously unknown assembly of galaxies located almost seven billion light-years away from us. The discovery, made possible by combining two of the most powerful ground-based telescopes in the world -- ESO's Very Large Telescope and NAOJ's Subaru Telescope -- is the first observation of such a prominent galaxy structure in the distant Universe, providing further insight into the cosmic web and how it formed. This 3-D illustration shows the position of the galaxies and reveals the extent of this gigantic structure. The galaxies located in the newly discovered structure are shown in red. Galaxies that are either in front or behind the structure are shown in blue. (Credit: ESO/L. Calçada/Subaru/National Astronomical Observatory of Japan/M. Tanaka)

From The Science Daily:

Science Daily (Nov. 4, 2009) — Astronomers have tracked down a gigantic, previously unknown assembly of galaxies located almost seven billion light-years away from us. The discovery, made possible by combining two of the most powerful ground-based telescopes in the world, is the first observation of such a prominent galaxy structure in the distant Universe, providing further insight into the cosmic web and how it formed.

Read more ....

Frozen, Hard To Reach, And Worth It

This photo was taken out the window of a NASA DC-8 research aircraft from 2,000 feet above the Amundsen Sea in West Antarctica on Oct. 21, 2009. Credit: NASA/Jane Peterson

From Live Science:

A recent photo captured by a NASA research airplane shows a giant iceberg in the Antarctic.

The photo, taken Oct. 21, was part of the space agency's Operation Ice Bridge airborne Earth science mission to study ice sheets, sea ice, and ice shelves at the bottom of the world.

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Fix Climate Change Or Else, Say Military Top Brass

From The New Scientist:

IF THE world fails to act soon on climate change, "preserving security and stability even at current levels will become increasingly difficult". That's the blunt message of a statement released in Washington DC (PDF) last week by 10 high-ranking military officials from Africa, Asia, Europe, Latin America and the US.

Preserving stability will become increasingly difficult if the world fails to act on climate change

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Software Listens For Hints Of Depression

Image: Signal processing: Researchers at Cogito Health are developing mathematical models to detect vocal cues that may signal depression. The last graph represents the software’s confidence level in determining depression, from the beginning to the end of a vocal recording. In this example, the data shows a very high likelihood of depression. Credit: Cogito Health

From Technology Review:

A large-scale trial will test whether software can identify depressed patients.

It's a common complaint in any communication breakdown: "It's not what you said, it's how you said it." For professor Sandy Pentland and his group at MIT's Media Lab, the tone and pitch of a person's voice, the length and frequency of pauses and speed of speech can reveal much about his or her mood.

While most speech recognition software concentrates on turning words and phrases into text, Pentland's group is developing algorithms that analyze subtle cues in speech to determine whether someone is feeling awkward, anxious, disconnected or depressed.

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Darwinian Evolutionary Theory Will Help Find Alien Life, Says NasaSscientist

Darwin's theory of evolution can help us find life on alien planets, says a Nasa scientist Photo: WIKIMEDIA COMMONS - IVO SHANDOR

From The Telegraph:

Charles Darwin’s theory of evolution may give pointers in the search for alien life, says a Nasa astrobiologist.

In a talk marking the 150th anniversary of the publication of On the Origin of Species, a Nasa scientist said that Darwinian evolution will be the driving force of life anywhere in the universe, and we should use its predictions to decide where to look.

Dr John Baross, a researcher at the Nasa Astrobiology Institute, said: "I really feel that Darwinian evolution is a defining feature of all life.

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The Monster Devouring Us: Even The Men Who Created The Internet Are Beginning To Fear Its Power To Destroy Our Freedom

Caught in the web: The internet can track our location and habits and information stored from accessing websites could be used against you

From The Daily Mail:

Fast-forward 40 years. It is November 2049 and privacy is a distant memory.

Every telephone call you make, every text you send on your mobile phone, every email and videocall, every financial transaction is recorded, stored, analysed and can potentially be used against you.

Each waking hour you are also deluged with marketing calls and sales pitches - which pop up on your mobile, your hand-held computer and even in your car.

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Veterans Return To Iraq – Virtually

From The Independent:

Computer simulations could help soldiers with post traumatic stress disorder.

The haunting sound of an Islamic call to prayer echoes around you as you walk through the Iraqi town, litter blowing across the street and market traders standing next to their stalls. Glance down and your rifle comes into view, look to the right and you spot the Black Hawk helicopter.

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Can We Manipulate The Weather?

Unseasonal snowfall in Beijing, which scientists claim is the result of their geoengineering, November 2009. Photograph: ADRIAN BRADSHAW/EPA

From The Guardian:

Chinese scientists claim to be able to control the weather. But is so-called geoengineering more than wishful thinking? And, if so, should we be worried?

The unseasonal snow that fell on Beijing for 11 hours on Sunday was the earliest and heaviest there has been for years. It was also, China claims, man-made. By the end of last month, farmland in the already dry north of China was suffering badly due to drought. So on Saturday night China's meteorologists fired 186 explosive rockets loaded with chemicals to "seed" clouds and encourage snow to fall. "We won't miss any opportunity of artificial precipitation since Beijing is suffering from a lingering drought," Zhang Qiang, head of the Beijing Weather Modification Office, told state media.

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The Future Of Cars ( Preview )

Alina Novopashna, Corbis

From Scientific American:

Industry leaders look way down the road.

Key Concepts

* The car fleet of 2030 will use a patchwork quilt of different fuels and power trains, with some cars meant for short hops and city driving.
* As the years go by, vehicles will become increasingly connected to one another electronically,
for crash prevention and social networking. Driver distraction will be an ongoing concern.
* Whether cars that run on hydrogen fuel cells will be common in 20 years remains an open question.

Read more ....

Ares' Continued Technical Problems And Money Troubles: Guest Analysis

From Popular Mechanics:

Space analyst Rand Simberg argues here that last week's test flight of the Ares I-X rocket, NASA's planned, vaunted crew-launch system, did little to stem the controversy over the program. The space agency claims that the flight was a success, providing data needed to retire some of the risk in the development of the eventual booster. But the flight was hardly flawless, Simberg says, and may have uncovered a previously unknown (or, at any rate, undiscussed) risk. Even with all of its technical issues—thrust oscillation, reduced performance margin, a gantry collision risk and now a risk during stage separation—the real problem of the program, Simberg argues, remains how much it will cost.

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As Space Collision Threat Looms, Pentagon Upgrades Its Monitoring of Satellites

Space Junk An artist's impression of space debris in low-Earth orbit. The U.S. government wants a better surveillance system to keep track of the thousands of space junk pieces. ESA

From Popular Science:

The U.S. Air Force has upgraded its ability to predict possible satellite collisions, as the risk from space debris increases.

Satellites currently must dodge an ever-growing gauntlet of other satellites and clouds of space debris, and this year the Pentagon has quietly upgraded its surveillance accordingly. The U.S. military announced yesterday that it now tracks 800 maneuverable satellites, compared to less than 100 prior to a February collision between an active U.S. satellite and a retired Russian communications satellite.

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Metabolic Syndrome Is A Killer

From Future Pundit:

High cholesterol isn't as dangerous as a combination of obesity, high blood pressure, and high blood sugar (insulin resistant diabetes).

The team, led by Assistant Clinical Professor of Public Health at Warwick Medical School Dr Oscar Franco, has discovered that simultaneously having obesity, high blood pressure and high blood sugar are the most dangerous combination of health factors when developing metabolic syndrome.

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Dark Matter And Dark Energy Make Up 95 Percent Of Universe, Detailed Measurements Reveal

The QUaD collaboration uses the 2.6-meter telescope shown here to view the temperature and polarization of the cosmic microwave background, a faintly glowing relic of the hot, dense, young universe. (Credit: Image courtesy of Nicolle Rager Fuller, NSF)

From Science Daily:

Science Daily (Nov. 3, 2009) — A detailed picture of the seeds of structures in the universe has been unveiled by an international team co-led by Sarah Church of the Kavli Institute for Particle Astrophysics and Cosmology, jointly located at the Department of Energy's SLAC National Accelerator Laboratory and Stanford University, and by Walter Gear, of Cardiff University in the United Kingdom. These measurements of the cosmic microwave background -- a faintly glowing relic of the hot, dense, young universe -- put limits on proposed alternatives to the standard model of cosmology and provide further support for the standard cosmological model, confirming that dark matter and dark energy make up 95% of everything in existence, while ordinary matter makes up just 5%.

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10 Failed Doomsday Predictions

Comets feature prominently in at least a couple notable doomsday scenarios. In fact nature may eventually destroy us with an icy space rock, but so far none of the predictions related to comets ­ or any other doomsday prognostications ­ have come true. Credit: stockxpert

From Live Science:

With the upcoming disaster film "2012" and the current hype about Mayan calendars and doomsday predictions, it seems like a good time to put such notions in context.

Most prophets of doom come from a religious perspective, though the secular crowd has caused its share of scares as well. One thing the doomsday scenarios tend to share in common: They don't come to pass.

Here are 10 that didn't pan out, so far:

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