The growing problem of space junk

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Forty-five years ago, Ernst Stuhlinger, the associate director of science at Nasa’s Marshall Space Flight Center, an original member of Wernher von Braun’s Operation Paperclip team, was asked by Sister Mary Jucunda, a Zambia-based nun, how he could suggest spending billions of dollars on spaceflight when many children were starving on Earth.

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New bricks fabricated out of junk we aren’t using

[youtube]http://www.youtube.com/watch?v=k4EeWdogyec[/youtube]

Millions of tons of waste from factories, building sites, and processing facilities are being turned into something besides landfill with a technology that has led researchers to fabricate bricks out of TVs, computers, paper waste, incinerator ash, rubble and other materials that were conventionally considered useless.

 

 

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