How this toothbrush saved the International Space Station

Posted by Emma Woollacott
NASA astronauts successfully replaced a power switching unit on the International Space Station yesterday, using a $3 toothbrush to clean up a stuck bolt.
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Japanese toothbrush goes solar

Posted by STARR KESHET
The Shiken company of Japan is field testing a funky solar-powered toothbrush that doesn't require toothpaste.
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