Fabled Viking 'sunstone' shown to really work

Posted by Emma Woollacott
French researchers have backed up the idea that Viking seafarers were able to navigate even on cloudy days by using 'sunstones' with special properties.
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Cloaking technology takes big step forward

Posted by Emma Woollacott
MIT scientists have discovered a new cloaking technology that can hide an object as large as a peppercorn.
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