Nov 21st, 2008 · The U.S. military has been embedding social scientists with troops in Iraq and Afghanistan. These anthropologists offer their knowledge about local cultures to help troops avoid misunderstandings, but the program, called the Human Terrain System, has seen many problems in recent months.
Nov 21st, 2008 · Scientists found 5,600 different species or strains of bacteria living in human intestines, making gut bacteria 10 times more diverse than expected. David Relman, one of the authors of the study, explains the findings and how a common antibiotic disrupts this bacterial community.
Nov 21st, 2008 · From the bottom of the sea to the bottom of the globe, scientists are looking for life in Earth's most extreme environments. A marine scientist on the R/V Atlantis and a microbiologist studying life in Antarctica recount their adventures, and what their research has in common.
Nov 20th, 2008 · The prototype BrainNavigator lets scientists travel through the rat brain — in 3 dimensions — and link the digital maps to pictures of real brain tissue.
Nov 19th, 2008 · The woolly mammoth is the first extinct mammal to have its DNA sequence deciphered. Scientists used hair that was found frozen in the Siberian permafrost, some for tens of thousands of years.
Nov 17th, 2008 · There may be a new explanation for Alzheimer's disease. Researchers think they've discovered precisely what damages brain cells and causes memory loss in people who have Alzheimer's. Brain scientists present the latest evidence at the annual meeting of the Society for Neuroscience this week in Washington.
Nov 15th, 2008 · British, American, Russian and French nuclear bomb tests in the 1950s and '60s left permanent records in trees around the globe. Scientists have found chemical signatures of the explosions in the wood of old trees in many countries.
Nov 14th, 2008 · Scientists have taken images of multiple planets orbiting a star other than our own sun. One extrasolar system reportedly has three planets; another star, 25 light-years away from Earth, has one planet in its orbit.