| One in Four Fish in U.S. Waterways Contaminated with Unsafe Levels of Mercury Mercury contamination found in a quarter of U.S. freshwater fish exceeds federal safe levels for human consumption, according to a study released today by the U.S. Geological Survey.The agency examined mercury in fish, sediment and water drawn from 291 rivers and streams between 1998 and 2005, finding 25 percent carried mercury at levels above the safe standard for human consumption (0.3 parts per million wet weight), while all of the fish had detectable mercury levels. [More] rss.sciam.com |
On the Web--November 9 In-Depth Report Galileo and the International Year of Astronomy [More] rss.sciam.com |
Combating climate change by observing the Earth As part of the U.S. charm offensive at the recent Copenhagen summit on climate change , a roughly one meter-diameter orb helped display a decade's worth of climate data collected by NASA satellites. "This is the golden age," NASA's Jack Kaye told me. As associate research director for the agency's Earth Science Division, he's "reaping the benefits of the 1990s." [More] rss.sciam.com |
Quarters Will Feature Parks The United States Mint will start circulating quarters honoring national parks and other national sites in April. nytimes.com |
From Anthrax to Allium : Views from a New York Postal Facility's Green Roof [Slide Show] A New York City postal processing facility that was contaminated during the 2001 anthrax attacks is now the site of the largest " green roof " in Manhattan. [More] Green Roof - Manhattan - 2001 anthrax attacks - Construction and Maintenance - Sustainable Architecture rss.sciam.com |