Top news for December 21, 2008

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Scientists finally know the body temperature of the Tyrannosaurus rex

'Drops in the ocean can make waves': How the grassroots climate movement took off in the US

U.S. Has Deployed Weapons in Space, Air Force Secretary Says

'That could push them over the edge': How climate change could fuel impulsive behavior

Scientists Gave People BPA For 5 Days. Their Insulin Sensitivity Changed

SpaceX launches 2nd classified mission for US Space Force in less than a week (photos)

Did 'all roads lead to Rome'? New study finds other cities in the empire were better connected.

New 'StarCraft' game announced, but it's a grim open-world shooter and it's not coming until 2030

US Space Force says it operates weapons in orbit: 'Our aim is deterrence'

We're not about to awaken an evil digital god — AI is far more likely to end in a great disappointment