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We summarize the week's scientific breakthroughs every Thursday.
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- 			 Health & Medicine Health & MedicineRice Woes, Pt. 1A shortfall in rice production has been developing well under the radar screen of agricultural economists and growers. The bad news: It promises to get much worse, and fairly soon. By Janet Raloff
- 			 Earth EarthChallenging ethanol’s dirty reputationAn inexpensive way to make ethanol from wood chips reduces net greenhouse gas emissions as much as more costly methods. 
- 			 Climate ClimateOlympic Clean UpRather than wowing its visitors this summer with world-class air pollution, China wants to impress them with its clean, green Olympics. By Janet Raloff
- 			 Earth EarthIn the aftermathThe charcoal left after a forest fire stimulates microbial activity that boosts carbon loss from organic material covering the ground. By Sid Perkins
- 			 Earth EarthIt’s the meat not the milesEating less red meat and dairy may do more to reduce food-associated greenhouse gas emissions than shopping locally. 
- 			 Earth EarthHeat reliefA new data-rich climate model foresees a short-term reprieve from warming for parts of western Europe and North America. By Sid Perkins
- 			 Humans HumansBear deadlineCourt calls for the already overdue decision on listing polar bears as a threatened species. By Susan Milius
- 			 Earth EarthMolten salts give biofuels a boostMaking biofuels from the chemical energy locked in plant cell walls has proven difficult, but molten salts may help. 
- 			 Ecosystems EcosystemsBuilding Homes Where the Buffalo RoamedA new study finds that being environmentally conscious is no guarantee you’ll put your home where you mouth is. By Janet Raloff
- 			 Humans HumansThe Return of EPA’s LibrariesAfter mothballing five libraries as a purported cost-cutting gesture, the agency is now responding to congressional prodding and unboxing its books. By Janet Raloff
- 			 Climate ClimateScience News for Kids: Polar Ice Feels the HeatFrom glaciers to sea ice, the big melt is on.