We live in a crowdsourced world, from movie reviews to online encyclopedias. Citizen science turns your love of the outdoors ...

They’re in your phone, TV, car headlights, remote controls—even traffic lights. LEDs (Light Emitting Diodes) are everywhere.

Remember The Clapper? The plug-in staple may have made for a catchy jingle in the 1980s, but it could also be considered as a ...