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Space junk: Why it is time to clean up the skies

Debris piling up around Earth that could seriously damage spacecraft and satellites has reached a tipping point. So how are we going to get rid of it? The six astronauts were awoken early and…
PUBLISHED: May 17, 2012
LENGTH: 2 minutes (655 words)

the man who runs the world's smartest website

To say that John Brockman is a literary agent is like saying that David Hockney is a photographer. For while it's true that Hockney has indeed made astonishingly creative use of photography, and…
PUBLISHED: Jan. 8, 2012
LENGTH: 18 minutes (4615 words)
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