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We summarize the week's scientific breakthroughs every Thursday.
- 			 Earth EarthObama administration should lead energy transitionR.K. Pachauri, an engineer and economist by training, is director-general of The Energy and Resources Institute in New Delhi, India, and a corecipient of the 2007 Nobel Peace Prize for his role as chief of the Intergovernmental Panel on Climate Change. The IPCC periodically issues consensus reports on the science of climate change. Senior editor Janet Raloff spoke with him about changes he hopes to see from the Obama administration. 
- 			 Earth EarthEnvironment: Science news of the year, 2008Science News writers and editors looked back at the past year's stories and selected a handful as the year's most interesting and important in Environment. Follow hotlinks to the full, original stories. By Science News
- 			 Earth EarthEarth: Science news of the year, 2008Science News writers and editors looked back at the past year's stories and selected a handful as the year's most interesting and important in Earth. Follow hotlinks to the full, original stories. By Science News
- 			 Earth EarthCorals, turfgrass and sediments offer stories of climate past and futureScience News reports from San Francisco at the fall meeting of the American Geophysical Union By Sid Perkins
- 			 Health & Medicine Health & MedicineEPA should test demasculinizing pollutants collectively, NRC saysCumulative effects of phthalates and related compounds likely larger than effects measured one chemical at a time, reports a National Research Council panel. By Janet Raloff
- 			 Climate ClimateHoldren to Head White House ScienceIt appears that another physicist with Nobel ties is set to become the primary Obama adviser on science. By Janet Raloff
- 			 Ecosystems EcosystemsThwarting Tree PoachersA new federal rule makes it harder to destroy protected forests. By Janet Raloff
- 			 Earth EarthSurprise find taps into magmaIn a scientific first, engineers drill into a subterranean pocket of molten rock. By Sid Perkins
- 			 Earth EarthSevere heat and cold top list of deadly natural hazardsData compilation by region, type of hazards shows deaths from more frequent events accumulate into significant numbers. Lightning strikes also high on the list. 
- 			 Earth EarthSolar wind pushes atmospheric breathingNew analyses of satellite data show that cycles of expansion and contraction are tied to changes in the solar wind. By Sid Perkins
- 			 Earth EarthImproved Cars: Chu on ItHey Detroit: Lighten up, the incoming Energy Secretary recommends. By Janet Raloff
- 			 Tech TechHoliday Gifts: Blog SitesSample other blogs and let us know of notables that we missed that are also worth sharing. By Janet Raloff