Airport Body Scans Reveal All

Millimeter wave technology produces whole body images (woman at left, man at right) that reveal what's under your clothes, including Metallic or non-metallic devices and objects are displayed, including weapons, explosives and other items that a passenger is carrying on his/her person. The images are viewed by a Transportation Security Officer in a remote location. According to the TSA: To ensure privacy, the setup "has zero storage capability and images will not be printed stored or transmitted. Once the transportation security officer has viewed the image and resolved anomalies, the image is erased from the screen permanently. The officer is unable to print, export, store or transmit the image." Credit: TSA

From Live Science:

New airport security scanners could become a popular alternative to body searches, but have also prompted some privacy concerns.

Whole-body imaging technologies can see through clothing to reveal metallic and non-metallic objects, including weapons or plastic explosives. They also reveal a person's silhouette and the outlines of underwear.

That hasn't stopped security officials from implementing them. The U.S. Transportation Security Agency (TSA) started using whole-body imaging at six airports this year, and plans are in the works to expand it to airports in several more U.S. cities later this year.

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NASA Headline: Deep Solar Minimum

Above: The sunspot cycle from 1995 to the present. The jagged curve traces actual sunspot counts. Smooth curves are fits to the data and one forecaster’s predictions of future activity. Credit: David Hathaway, NASA/MSFC. [more]

From Watts Up With That?

The sunspot cycle is behaving a little like the stock market. Just when you think it has hit bottom, it goes even lower.

2008 was a bear. There were no sunspots observed on 266 of the year’s 366 days (73%). To find a year with more blank suns, you have to go all the way back to 1913, which had 311 spotless days: plot. Prompted by these numbers, some observers suggested that the solar cycle had hit bottom in 2008.

Maybe not. Sunspot counts for 2009 have dropped even lower. As of March 31st, there were no sunspots on 78 of the year’s 90 days (87%).

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'First Economical Process' For Making Biodiesel Fuel From Algae

This is the feedstock transferring system for algae biodiesel.
(Credit: United Environment & Energy LLC)

From Science Daily:

ScienceDaily (Mar. 31, 2009) — Chemists reported development of what they termed the first economical, eco-friendly process to convert algae oil into biodiesel fuel — a discovery they predict could one day lead to U.S. independence from petroleum as a fuel.

The study was presented recently at the 237th National Meeting of the American Chemical Society.

One of the problems with current methods for producing biodiesel from algae oil is the processing cost, and the New York researchers say their innovative process is at least 40 percent cheaper than that of others now being used. Supply will not be a problem: There is a limitless amount of algae growing in oceans, lakes, and rivers, throughout the world.

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Deformed Skull Suggests Human Ancestors Had Compassion

A newly reconstructed deformed fossil skull suggests our human ancestors probably cared for deformed offspring for years.

From Wired Science:

The skull indicates that the child who lived about 530,000 years ago would have been severely handicapped — and yet survived at least five years and possibly several years longer. That suggests the parents or community provided the child with care, despite his or her obvious deformities.

"Her/his pathological condition was not an impediment to receiv[ing] the same attention as any other Middle Pleistocene Homo child," the the team of Spanish researchers write in the Proceedings of the National Academy of Sciences.

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When Did April Fool's Day Begin?

From Live Science:

Though pranksters and joke-lovers in many countries now gleefully prepare to dupe friends and loved ones on April Fool's Day, no one knows exactly when or why, or even where, this tradition began.

A giddy spurt of practical joking seems to have coincided with the coming of spring since the time of the Ancient Romans and Celts, who celebrated a festival of mischief-making. The first mentions of an All Fool's Day (as it was formerly called) came in Europe in the Middle Ages.

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Tipping Point In The Media: Global Warming

From Watts Up With That?

Over the last year or so I have been taking an informal survey of a key news metric - Google news searches for the term “global warming.” A year ago, the ratio of alarmist/skeptical articles was close to 100/1. About six months ago, the ratio was 90/10, Two months ago it was 80/20, and today it hit 50/50 for the first time - including the lead skeptical story “A Cooling Trend Toward Global Warming“. One thing that has changed is the rise of blogs written by informed citizens, complemented by the demise of corporate newspapers which make money from keeping people continually alarmed about one thing or another.

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What Is Norovirus? How Contagious Is It? Can It Be Fatal?

NASTY NOROVIRUS: Virus particles like these are responsible for sickening 23 million people in the U.S. every year. GrahamColm via Wikimedia Commons

From Scientific American:

A Massachusetts college closes down after over 100 students fall ill with norovirus infections.

An outbreak of stomach flu believed to be caused by norovirus has prompted a temporary shutdown of Babson College, a small business college and graduate school in Babson Park, Mass. School officials announced that classes, meetings, athletic events and all other activities would be canceled until Wednesday, when the school is expected to have the outbreak under control.

Dennis Hanno, Babson's undergraduate dean, says that 131 students have visited the school's health services clinic since Wednesday complaining of nausea, vomiting and diarrhea—all symptoms associated with norovirus, a group of viruses formerly known as Norwalk-like viruses. "We saw a high of 40 reported cases on Friday," Hanno told ScientificAmerican.com, noting that the numbers have dropped significantly since then with only four cases reported today. The main concern with this stomach virus, Hanno says, is that it may cause severe dehydration; 12 of the students received fluids intravenously to replenish those lost.

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New Theory On Largest Known Mass Extinction In Earth's History

Hypothetically speaking, large areas of the hyper saline Zechstein Sea and its direct environment could have looked like this, which in the Permian Age was situated about where present day Central Europe is. At the end of the Permian Age the Zechstein Sea was irrevocably disconnected from the open sea and the remaining sections of sea soon dried out after that. As a result the microbial-limited halogenated gases from the Zechstein Sea stopped and vegetation was able to regenerate again. The pink colour of the Zechstein Sea was probably brought about by microbes with an extreme preference for salt, as is the case with salt lakes today. In the background sand dunes can be recognised from a landscape with hardly any water. (Credit: Dr. Karsten Kotte/Universität Heidelberg)

From Science Daily:

ScienceDaily (Mar. 31, 2009) — The largest mass extinction in the history of the earth could have been triggered off by giant salt lakes, whose emissions of halogenated gases changed the atmospheric composition so dramatically that vegetation was irretrievably damaged.

At least that is what an international team of scientists has reported in the most recent edition of the Proceedings of the Russian Academy of Sciences (Dokladi Earth Sciences). At the Permian/Triassic boundary, 250 million years ago, about 90 percent of the animal and plant species ashore became extinct. Previously it was thought that volcanic eruptions, the impacts of asteroids, or methane hydrate were instigating causes.

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Coffee Lessens The Pain Of Exercise

Former competitive cyclist Robert Motl, now a professor of kinesiology and community health, is studying the effects of caffeine on pain during exercise. Credit: L. Brian Stauffer

From Live Science:

That cup of coffee that many gym rats, bikers and runners swill before a workout does more than energize them. It kills some of the pain of athletic exertion, a new study suggests. And it works regardless of whether a person already had a coffee habit or not.

Caffeine works on a system in the brain and spinal cord (the adenosine neuromodulatory system) that is heavily involved in pain processing, says University of Illinois kinesiology and community health professor Robert Motl. And since caffeine blocks adenosine, the biochemical that plays an important role in energy transfer and thus exercise, he speculated that it could reduce pain.

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Women Excluded From 'Mars Mission' Crew To Prevent Sexual Tension Ruining 105-Day Voyage

Five of the crew during survival training near Star City, Russia.
They will live together for 105 days in cramped conditions.

From The Daily Mail:

Today an all-male crew of six space enthusiasts were shut inside the Mars-500 'spaceship' in Moscow, for a simulated 105-day mission.

The purpose of the reality TV-like mission is to study the psychological and physiological effects of isolation on stress levels, sleep quality, mood and immunity levels.

The experiment paves the way for a 500 day mission which will completely replicate the conditions of a real mission to Mars.

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Cosmonaut: Russians Can't Use American Toilet in Space

Which bathroom do I use? The International Space Station as seen from the departing space shuttle Discovery on March 25. NASA

From FOX News:

MOSCOW — Squabbles on Earth over how cosmonauts and astronauts divide up the space station's food, water, toilets and other facilities are hurting the crew's morale and complicating work in space, a veteran Russian cosmonaut said, according to an interview published Monday.

Gennady Padalka told the Novaya Gazeta newspaper as saying space officials from Russia, the United States and other countries require cosmonauts and astronauts to eat their own food and follow stringent rules on access to other facilities, like toilets.

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My Comment: This news is getting better everyday.

Hobbit Skeleton Replica Goes On Display

Image: Artist's rendition of Homo floresiensis. Credit: National Geographic Society/ Peter Schouten

From Live Science:

A cast of a "hobbit" skeleton will go on public display for the first time as part of a human evolution symposium April 21 on Long Island, New York.

The hobbit fossils (and near fossils) were discovered on the Indonesian island of Flores in 2003. Some scientists think the discovery represents a new species of human. Others argue it was human like us, only with a disorder called microcephaly which gave it an unusually small head.

The skeleton is set to go on display at Stony Brook University's Staller Center for the Arts as part of the 7th Human Evolution Symposium there.

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Why Some People Shake Off The Flu In A Couple Of Days, While Others Suffer Longer, Or Die

From Science Daily:

ScienceDaily (Mar. 30, 2009) — For some people it is a certainty: as soon as the annual flu season gets underway, they are sure to go down with it. It is little comfort to know that there are other people who are apparently resistant to flu or overcome the illness after just a couple of days. It is this phenomenon that is now being investigated by researchers at the Helmholtz Center for Infection Research, using various strains of mice.

"Where there are many scientific works dealing solely with the flu virus, we have investigated how the host reacts to an infection," says Klaus Schughart, head of the Experimental Mouse Genetics research group. In infection experiments the researchers have now discovered that an excessive immune response is responsible for the fatal outcome of the disease in mice. This overreaction has genetic roots.

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Discover Interview The Man Who Found Quarks And Made Sense Of The Universe

From The Discover Magazine:

Murray Gell-Mann had a smash success with particles, notorious dustups with Feynman, and a missed opportunity with Einstein.

It is no accident that the quark—the building block of protons and neutrons and, by extension, of you and everything around you—has such a strange and charming name. The physicist who discovered it, Murray Gell-Mann, loves words as much as he loves physics. He is known to correct a stranger’s pronunciation of his or her own last name (which doesn’t always go over well) and is more than happy to give names to objects or ideas that do not have one yet. Thus came the word quark for his most famous discovery. It sounds like “kwork” and got its spelling from a whimsical poem in James Joyce’s Finnegans Wake. This highly scientific term is clever and jokey and gruff all at once, much like the man who coined it.

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How Enormous Batteries Could Safeguard The Power Grid

Big battery: Wind turbines charge these large-scale batteries in Luverne, Minn., while the wind blows. If the breeze calms, the batteries keep power flowing into the utility grid. (Courtesy of XCel Energy)

From The Christian Science Monitor:

Since sunlight and wind can be unreliable, renewable utilities install big backups.

One evening in late February 2008, the famously steady winds of west Texas began to wane until, at last, hundreds of giant wind turbines were becalmed – their enormous blades slowed or stilled.

In just three hours, grid operators at the Electric Reliability Council of Texas watched wind power output fall by 1,400 megawatts – power needed to supply roughly 600,000 homes. Following emergency procedures, a blackout was avoided by quickly cutting power to several industrial customers.

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Giant Laser Experiment Powers Up

From BBC:

The US has finished constructing a huge physics experiment aimed at recreating conditions at the heart of our Sun.

The US National Ignition Facility is designed to demonstrate the feasibility of nuclear fusion, a process that could offer abundant clean energy.

The lab will kick-start the reaction by focusing 192 giant laser beams on a tiny pellet of hydrogen fuel.

To work, it must show that more energy can be extracted from the process than is required to initiate it.

Professor Mike Dunne, who leads a European venture that is also pursuing nuclear fusion with lasers, told BBC News that if NIF was successful, it would be a "seismic event".

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Volcanoes Spawn Mini-Cyclones, Then Lightning "Sheaths"

A waterspout forms offshore from an erupting Kilauea volcano vent in Kilauea, Hawaii. A March 2009 study revealed a newfound link between two of nature's most violent phenomena that could explain how volcanic ash clouds can generate lightning and tornado-like dust devils and waterspouts. Photograph by Steve and Donna O'Meara

From National Geographic:

A newfound link between two of nature's most violent phenomena could explain how volcanic ash clouds can generate bolts of lightning and tornado-like dust devils and waterspouts.

Scientists have long known that tornadoes are the products of colossal columns of spinning air—mesocyclones—inside large storm clouds.

A new study suggests mesocyclones can also form in the ash plumes of volcanic eruptions.

Under certain circumstances, these volcanic mesocyclones can aid in lightning production and create tornado-like structures that corkscrew toward the Earth, said study team member Pinaki Chakraborty of the University of Illinois at Urbana-Champaign.

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Cosmonaut Grumbles About Space Bureaucracy

Image top: The International Space Station, the largest scientific
cooperative program in history Credit: NASA

From Yahoo News/AP:

MOSCOW – Squabbles on Earth over how cosmonauts and astronauts divide up the space station's food, water, toilets and other facilities are hurting the crew's morale and complicating work in space, a veteran Russian cosmonaut said, according to an interview published Monday.

Gennady Padalka told the Novaya Gazeta newspaper as saying space officials from Russia, the United States and other countries require cosmonauts and astronauts to eat their own food and follow stringent rules on access to other facilities, like toilets.

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New Portable Energy Source Utilizes Microbes To Turn Electricity Directly To Methane

This photo shows Bruce E. Logan, Shaoan Cheng and Defeng Xing with a microbial cell that produces methane directly from electricity. (Credit: Bruce Logan's Lab, Penn State)

From Science Daily:

ScienceDaily (Mar. 30, 2009) — A tiny microbe can take electricity and directly convert carbon dioxide and water to methane, producing a portable energy source with a potentially neutral carbon footprint, according to a team of Penn State engineers.

"We were studying making hydrogen in microbial electrolysis cells and we kept getting all this methane," said Bruce E. Logan, Kappe Professor of Environmental Engineering, Penn State. "We may now understand why."

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Mysterious East Coast Boom Was Falling Russian Rocket

A look at Russia's Soyuz rocket stages. Credit: SPACE.com Graphic.

From Live Science:

The mysterious boom and flash of light seen over parts of Virginia Sunday night was not a meteor, but actually exploding space junk from the second stage of a Russian Soyuz rocket falling back to Earth, according to an official with the U.S. Naval Observatory.

"I'm pretty convinced that what these folks saw was the second stage of the Soyuz rocket that launched the crew up to the space station," said Geoff Chester of the Naval Observatory in Washington, D.C.

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