Image: Siding Spring grazes Mars

This excellent view of Mars seen together with Comet C/2013 A1 Siding Spring was captured by Scott Ferguson, Florida, USA, on 19 October 2014 on the morning that the enigmatic object made the closest-known ...

20 hours ago
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NASA is catalyst for hydrogen technology

NASA answered a call to help the world's largest aerospace company develop a better way to generate electricity for its aircraft. Instead, it wound up helping a very small technology company to thrive.

20 hours ago
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Beijing's focus on coal lost in haze of smog

The soaring, grimy chimneys of the coal-fired power station have belched the last of their choking fumes into Beijing's air, authorities say—but experts doubt the plan will ease the capital's smog.

23 hours ago
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