February 14, 2013 Small amounts of the drugs that people take end up in wastewater and then in streams and rivers. It's usually not enough to harm the health of humans who swim in or drink the water. But there is growing evidence that pharmaceuticals in wastewater may affect wildlife.
February 12, 2013 North Korea's latest nuclear weapons test is much more powerful than the previous two, according to estimates made by instruments that measure seismic waves from the blast. But it's hard to verify North Korea's claim that the test was of a miniaturized nuclear weapon.
January 16, 2013 Land that isn't in good enough condition to grow crops could be used to produce substantial amounts of liquid biofuels, a new study claims. But there are many concerns about the study, and about the future of advanced biofuels in the U.S. and abroad.
January 1, 2013 The discovery of the Higgs boson will likely be hailed as the most important scientific discovery of 2012. But many ideas that change the world don't tend to spring from flashy moments of discovery. Our view of nature — and our technology — often evolve from a sequence of more subtle advances.
December 20, 2012 When a meteorite crashed down in April on the exact spot where gold was discovered in 1848, professional and amateur meteorite hunters alike fanned out to collect small chunks. Now more than 50 scientists have published an analysis of the rare space rock.
December 12, 2012 Conventional wisdom holds that complex life evolved in the sea, then crawled up onto land. But a provocative new study argues that the procession might be drawn in the wrong direction. The earliest large life forms may have appeared on land long before the oceans filled with creatures.
December 7, 2012 Diplomats in Doha, Qatar, are working late into the night to hammer out a deal in the 18th round of U.N. climate talks. Expectations are low as the talks are part of a multiyear process to make a transition from the fading Kyoto climate treaty to something that engages all nations of the world.
November 29, 2012 The good news: Sea level has risen by just a half-inch in the past 20 years as a result of shrinking ice. The bad news: The melting is now speeding up. Over the next century, this could contribute to another 2- to 3-foot rise in sea level — enough to flood New York City every few years.
October 26, 2012 By now you know that California is preparing to vote Nov. 6 on a ballot initiative to require labels on genetically modified food. While polls show people evenly split on the issue, scientists says such labeling is misleading and may scare consumers.