Cold air rises—what that means for Earth's climate

Conventional knowledge has it that warm air rises while cold air sinks. But a study from the University of California, Davis, found that in the tropical atmosphere, cold air rises due to an overlooked effect—the lightness ...

New source of global nitrogen discovered

For centuries, the prevailing science has indicated that all of the nitrogen on Earth available to plants comes from the atmosphere. But a study from the University of California, Davis, indicates that more than a quarter ...

Did the Chilean Quake Shift Earth's Axis?

Pictures of widespread devastation leave no doubt: Last month's 8.8 magnitude earthquake in coastal Chile was extremely strong. Indeed, say NASA scientists, it might have shifted the axis of Earth itself.

Japan's Honda unveils futuristic unicyle (w/ Video)

It looks a bit like a plastic figure of eight, and its Japanese designers say it could revolutionise the way we get around, in total comfort and without breaking a sweat.

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