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We summarize the week's scientific breakthroughs every Thursday.
- 			 Agriculture AgricultureAAAS: Stress Can Make Plants More NutritiousPeople who aren't veggie lovers might want to seek out types of produce that deliver an especially big nutrient bang for the gram. By Janet Raloff
- 			 Space SpaceCosmic mysteryHigh-energy invaders from space could signal a nearby pulsar, or perhaps dark matter. By Susan Gaidos
- 			 Earth EarthFirst waveThe presidents of two island nations draft escape plans, anticipating sea level rise. 
- 			 Climate ClimatePlumes of arctic haze traced to Russia, KazakhstanSmoke from forest fires, agricultural burning may be substantial part of springtime plumes. By Sid Perkins
- 			 Chemistry ChemistrySupergoo Erases ‘Monument-al’ Nuclear FalloutFrom disposable diapers comes a technology that can be used to extract radionuclides off of the porous surfaces of buildings. By Janet Raloff
- 			 Climate ClimateWinter birds shift northMore than 170 common North American species are wintering farther north than they did in the past. By Susan Milius
- 			 Ecosystems EcosystemsFlowering plants welcome other lifeWhen angiosperms diversified 100 million years ago, they opened new niches for ants, plants and frogs. 
- 			 Earth EarthCalifornia may yet get the first greenhouse gas limits for carsPresident Obama decides to revisit a controversial decision made less than a year ago by his predecessor. By Janet Raloff
- 			 Humans HumansFederal R&D downturn preceded ‘08 economic crashFederal R&D spending looks grim — until you compare it to the U.S. economy in general. By Janet Raloff
- 			 Earth EarthAnimal ancestors may have survived ‘snowball Earth’Chemical fossils in Precambrian sedimentary rock push back the first date for animal life. 
- 			 Humans HumansOn Science & the Fearsome OMBPresident Obama has directed federal budget masters to put public interests first when they review proposed regulations. By Janet Raloff
- 			 Chemistry ChemistryNonstick chemicals linked to infertilityFeatured blog: Infertility doubled in women who had high concentrations of commercially produced nonstick chemicals polluting their blood. By Janet Raloff