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Did a burning oil spill wipe out the dinosaurs?

Sixty six million years ago, the dinosaurs suddenly disappeared, along with most of the species on the planet. The extinction occurred at precisely the same time that a giant asteroid struck the Earth. The fact that the two ...

'Ring of fire' solar eclipse to dim Africa, Asia

Skywatchers along a narrow band from west Africa to the Arabian Peninsula, India and southern China will witness on Sunday a dramatic "ring of fire" solar eclipse.

In the far future, the universe will be mostly invisible

If you look out on the sky on a nice clear dark night, you'll see thousands of intense points of light. Those stars are incredibly far away, but bright enough to be seen with the naked eye from that great distance—a considerable ...

How sunflowers 'see' the sun: Study describes a novel mechanism

Sunflowers famously turn their faces to follow the sun as it crosses the sky. But how do sunflowers "see" the sun to follow it? New work from plant biologists at the University of California, Davis, published Oct. 31 in PLOS ...

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