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We summarize the week's scientific breakthroughs every Thursday.
- 			 Earth EarthGas tanks could guzzle half of U.S. corn yieldsStrong expansion of the U.S. corn-to-ethanol industry, now under way, stands poised to divert much of the grain from food uses to transportation fuel. By Janet Raloff
- 			 Earth EarthSudden ChillToday's combination of nuclear proliferation, political instability, and urban demographics increases the likelihood that humankind could suffer a devastating nuclear winter. By Sid Perkins
- 			 Earth EarthHeating releases cookware chemicalsNonstick coatings on fry pans and microwave-popcorn bags can, when heated, release traces of potentially toxic perfluorinated chemicals. By Janet Raloff
- 			 Earth EarthAquatic Non-ScentsMany common pollutants appear to be jeopardizing the survival of fish and other aquatic species by blunting their sense of smell. By Janet Raloff
- 			 Earth Earth2006: Hottest year in U.S. historyPreliminary analyses of weather data gathered from more than 1,200 sites across the continental United States indicate that last year was the warmest on record. By Sid Perkins
- 			 Earth EarthMercury pollution settles in hot spotsCertain areas of North America are particularly susceptible to environmental accumulation of mercury. By Ben Harder
- 			 Earth EarthCounterintuitive ToxicityToxicologists risk missing important health effects, both good and bad, if they don't begin regularly probing the impacts of very low doses of poisons. By Janet Raloff
- 			 Agriculture AgricultureCloned Meat and Milk Are Safe, but They Won’t Hit Stores SoonA Food and Drug Administration analysis concludes that food from cloned animals is safe, but the effort and expense involved in creating these animals means that products from them won't be in markets anytime soon. 
- 			 Earth EarthNatural HazardsThe U.S. Geological Survey has launched a new Web site about the threat of natural disasters. It provides seven easy-to-understand fact sheets on earthquakes, floods, hurricanes, landslides, tsunamis, volcanoes, and wildfires. The site also highlights resources and information available from the USGS and provides links to individual hazards Web pages for more detailed information. Go […] By Science News
- 			 Agriculture AgricultureBig footprintsLivestock production carries surprisingly high, and largely hidden, environmental costs. By Janet Raloff
- 			 Earth EarthYes, it’s asbestosFederal mineralogists have corroborated earlier evidence that Sierra-foothills communities around Sacramento, Calif., are built atop soils naturally laced with asbestos. By Janet Raloff
- 			 Earth EarthMeteorites on IceJoin a recent expedition to the Antarctic to search for meteorites. Check out reports from the 2006-2007 trek in the daily expedition blog. Go to: http://geology.cwru.edu/~ansmet/ and http://www.humanedgetech.com/expedition/ansmet2/ By Science News