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A minority of neuroscientists disagree that sleep actively aids memory, suggesting instead that consolidation of memories is merely a side effect of snoozing. They argue that the true purpose of sleep is to "cool down" the brain by resting the neurons that have been firing all day long. Paller's...

Author: /time Magazine | Title: Want to Boost Your Memory? Try Sleeping on It | 11/30/2009 | See Source »

Tuna has long been a standard item on my shopping list. Not anymore. A small contribution to conservation, perhaps, but one by one it may make a difference. Thank you TIME for regularly alerting readers to the planet's predicament. Cilla Geldenhuys, WITSAND, SOUTH AFRICA

Author: /time Magazine | Title: Net Loss | 11/30/2009 | See Source »

This month, highway-hugging Floridians are seeing perhaps the most convincing evidence yet that they need an attitude adjustment. A study by the nonprofit Transportation for America in Washington, D.C., lists the most dangerous metropolitan areas for pedestrians, and the worst four just happen to be in the Sunshine State...

Author: /time Magazine | Title: Florida's Deadly Hit-and-Run Car Culture | 11/29/2009 | See Source »

The findings suggest that when dopamine is present during an imagined event - that is, even when you're not actually experiencing it in person - it still influences how much pleasure the brain will expect from it in the future. Researchers think the extra shot of dopamine may aid learning - that...

Author: /time Magazine | Title: Can Dopamine Make Your Future Look Brighter? | 11/27/2009 | See Source »

Shelby wants to impose strong regulation on financial firms to prevent them from getting "too big to fail." He agrees with Dodd that there should be a consolidated regulator for banks, though perhaps not the single supervisor Dodd envisions. But Shelby opposes Dodd's plans for eventually doing away with...

Author: /time Magazine | Title: Senator Dodd's Bipartisan Push on Financial Reform | 11/27/2009 | See Source »

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