News

Scientists Listen To Memory Cell Conversations

The conversations neurons have as they form and recall memories have been decoded by Medical College of Georgia scientists.

How Do Salamanders Grow a New Leg?

The most comprehensive study to date of the proteins in a species of salamander that can regrow appendages may provide important clues to how similar regeneration could be induced in humans.

Heart Cells Grown On Chip

Johns Hopkins biomedical engineers, working with colleagues in Korea, have produced a laboratory chip with nanoscopic grooves and ridges capable of growing cardiac tissue that more closely resembles natural heart muscle.

New Meat-Eating Dinosaur Changes Evolutionary Tree

Paleontologists, aided by amateur volunteers, have unearthed a previously unknown meat-eating dinosaur from a fossil bone bed in northern New Mexico, settling a debate about early dinosaur evolution, revealing a period of explosive diversification and hinting at how dinosaurs spread across the supercontinent Pangaea.

Will Cassini Solve Saturn's Mystery?

Extensive analyses and modeling of Cassini imaging and heat-mapping data have confirmed and extended previous ideas that migrating ice, triggered by infalling reddish dust that darkens and warms the surface, may explain the mysterious two-toned "yin-yang" appearance of Saturn's moon Iapetus. The results, published online Dec. 10 in a pair of papers in the journal Science, provide what may be the most plausible explanation to date for the moon's bizarre appearance, which has puzzled astronomers for more than 300 years.

Geminid Meteor Shower Today

The Geminid meteor shower will be at its best on the evening of Dec. 13, according to the editors of StarDate magazine. While most meteor showers can be frustratingly unpredictable, the Geminids are one of the most reliable. Given clear skies, they consistently delight meteor watchers.

This year, skywatchers can expect to see dozens of meteors per hour, rising to more than 100 meteors per hour at the shower's predicted peak at 11 p.m. CST. The tiny sliver of the waning crescent Moon will not overpower any meteors.

Earth's Atmosphere Came From Outer Space

The gases which formed the Earth's atmosphere - and probably its oceans - did not come from inside the Earth but from outer space, according to a study by University of Manchester and University of Houston scientists.

Bacteria Helps Understand Human Decision Making

Scientists studying how bacteria under stress collectively weigh and initiate different survival strategies say they have gained new insights into how humans make strategic decisions that affect their health, wealth and the fate of others in society.

Supportive Materials Will Help Regenerate Heart

Bioengineers from University of California, San Diego are developing new regenerative therapies for heart disease. The work could influence the way in which regenerative therapies for cardiovascular and other diseases are treated in the future.

Why King Kong Failed To Impress

Humans have the same receptors for detecting odors related to sex as do other apes and primates. But each species uses them in different ways, stemming from the way the genes for these receptors have evolved over time, according to Duke University researchers.

Life On Mars Gets Boost By Methane

Scientists have ruled out the possibility that methane is delivered to Mars by meteorites, raising fresh hopes that the gas might be generated by life on the red planet, in research published tomorrow (Wednesday 9 December 2009) in Earth and Planetary Science Letters.

Hubble Reveals Most Distant Galaxies

Using the recently updated Hubble Space Telescope (HST) two teams of UK astronomers have identified galaxies which are likely to be the most distant yet seen.

Sensors In Human Skin!

The human sensory experience is far more complex and nuanced than previously thought, according to a groundbreaking new study published in the December 15 issue of the journal Pain. In the article, researchers at Albany Medical College, the University of Liverpool and Cambridge University report that the human body has an entirely unique and separate sensory system aside from the nerves that give most of us the ability to touch and feel. Surprisingly, this sensory network is located throughout our blood vessels and sweat glands, and is for most people, largely imperceptible.

A Superbright Supernova

An extraordinarily bright, extraordinarily long-lasting supernova named SN 2007bi, snagged in a search by a robotic telescope, turns out to be the first example of the kind of stars that first populated the Universe.

Earth More Sensitive To Carbon Dioxide

The Earth's temperature may be 30-50 percent more sensitive to atmospheric carbon dioxide than has previously been estimated, reports a new study published in Nature Geoscience this week.

Military Children Face More Emotional Challenges

Children in military families may suffer from more emotional and behavioral difficulties when compared to other American youths, with older children and girls struggling the most when a parent is deployed overseas, according to a new RAND Corporation study.

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