Sixty-six million years ago an asteroid smashed into Earth releasing energy equivalent to 100 million nuclear bombs and creating a massive dust cloud that blocked out the sun for more than a year.
Earth Sciences
May 11, 2016
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Standard space dockings are difficult enough, but a future ESA mission plans to capture derelict satellites adrift in orbit. Part of an effort to control space debris, the shopping list of new technologies this ambitious ...
Space Exploration
Feb 24, 2014
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Earth's coral reefs have not been faring well in recent decades, facing multiple threats from pollution, disease, elevated water temperatures, and overfishing. Often referred to as the "rainforests of the Sea," coral reefs ...
Ecology
Sep 12, 2011
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