A Worcester 7th grader built a solar invention for under $25. Now he's headed to Washington, D.C.

Jason Chang didn't set out to solve a global energy problem. He just wanted to stop adjusting his family's solar-powered ...
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Groundbreaking study finds how solar panels work after 30 years

Thirty is the new 20. Well, at least maybe in the solar panel world. That's because a study of six, three-decade-old arrays in Switzerland found them to still be working well, retaining more than 80% ...