BlackBerry posts 3Q loss of $4.4B (Update)

BlackBerry reported a massive $4.4 billion loss in the third quarter and a 56 percent drop in revenue in its first quarterly report under new chairman and chief executive John Chen.

Cleaning solar panels often not worth the cost, engineers find

Don't hire someone to wash your dirty solar panels. That's the conclusion of a study recently conducted by a team of engineers at the University of California, San Diego. Their findings were published in the July 25 online ...

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