15/05/2015

OPALS boosts space-to-ground optical communications research

Ever wonder why stars seem to twinkle? This effect is caused by variations in the density of our atmosphere that cause blurring in light coming from space. It's pretty for stargazing, but a challenge for space-to-ground communications.

Giving freight rail tracks a boost

The big chunks of rock—crushed limestone or dolomite that engineers call ballast—that keep railroad tracks in place look like a solid footing even as freight cars rumble overhead.

Image: Catalan coast, Spain, from orbit

This radar image captures part of Catalonia in northeastern Spain including the city of Barcelona (right), the site of one of Europe's principal seaports.

Prying parents: Phone monitoring apps flourish in S. Korea

Lee Chang-june can be miles from his 12-year-old son but still know when he plays a smartphone game. With the press of an app he can see his son's phone activity, disable apps or totally shut down the smartphone.

16 new lettuce breeding lines from ARS

U.S. Department of Agriculture (USDA) scientists in California have developed 16 new lettuce breeding lines. Lettuce production in the United States is concentrated mostly in California and Arizona, where it is grown year-round. ...

Which is most valuable: Gold, cocaine or rhino horn?

Many of the world's largest herbivores—including several species of elephants, rhinoceroses, hippopotamuses and gorillas—are in danger of becoming extinct. And if current trends continue, the loss of these animals would ...

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