Climate
- 			 Climate ClimateCrop nutrients may drop as carbon dioxide risesMany staple grains and legumes pack 5 to 10 percent less iron, zinc and protein when grown at carbon dioxide levels expected midcentury. By Beth Mole
- 			 Climate ClimateFederal report details climate change in U.S.The latest National Climate Assessment was released by federal officials May 6. 
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- 			 Climate ClimateGlacial microbes gobble methaneWhile some bacteria produce methane in Greenland’s melting ice sheet, others may consume the greenhouse gas as it escapes. By Beth Mole
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- 			 Climate ClimateReef fish act drunk in carbon dioxide–rich ocean watersIn first test in the wild, fish near reefs that bubble with CO2 lose fear of predators’ scent. By Meghan Rosen
- 			 Climate ClimateOcean bacteria may have shut off ancient global warmingOcean-dwelling bacteria may have helped end global warming 56 million years ago by gobbling up carbon from the CO2-laden atmosphere. 
- 			 Climate ClimateIPCC calls for swift switch to alternative powerRapid adoption of green power production will be necessary to avert a climate crisis, latest IPCC report says. By Beth Mole
- 			 Climate ClimateWorld unprepared for changing climate, IPCC saysThe latest intergovernmental report says planetwide impacts continue. 
- 			 Paleontology PaleontologyMicrobes indicted in ancient mass extinctionAbout 252 million years ago an estimated 96 percent of all species were wiped from Earth, and now scientists have a new suspect in the killing — methane-belching microbes. 
- 			 Animals AnimalsAs their homes warm, salamanders shrinkMany species of salamanders respond to climate change by getting smaller. 
- 			 Climate ClimateNatural climate shifts affect sea level riseA recent dip in the rate of sea level rise may be due to natural climate variability.