September 17, 2013 Layers of wax in the marine mammals' ears can be read like tree rings, scientists say, recording a whale's age and also information about pollutants in the water the whale swam through. Wax from a blue whale that washed ashore in 2007 contained surprisingly high levels of DDT.
September 13, 2013 For decades, DNA has been used to identify victims of crime, even victims of war crimes. But there's no international standard for using DNA analysis for identifying bodies after a disaster. So some scholars are calling for an international group with the same reach as weapons inspectors.
September 13, 2013 For the past couple of years, NASA has been using remotely piloted aircraft to study hurricanes. And they are turning up new information about things like how dust from Africa can determine whether weather systems become hurricanes in the Atlantic.
September 13, 2013 Planthoppers are champion jumpers — launching themselves upward, hundreds of times their own height, in just a couple of milliseconds. They achieve this feat with the help of cog-like teeth on their legs — the first mechanical gear system ever found in nature.
September 12, 2013 Cut a tumor from a child's brain and you may save a life. But surgery can hurt the child if healthy brain cells are removed. A Seattle doctor is working on a substance that might help. It binds tightly to cancer cells and makes them glow, so they're easier to distinguish from healthy tissue.
September 9, 2013 America is in the midst of a rye whiskey renaissance. Lovers of the spirit say it's spicier, edgier and less sweet than bourbons. But when scientists look at the flavor signatures of American whiskeys, what matters the most isn't always the grain in the bottle.
September 6, 2013 Tamu Massif, first thought to be perhaps dozens of individual volcanoes, turns out to be just one — but it's really big. It's about the size of New Mexico.