Humans have been studying and playing with light for millennia — from the ancient civilizations using rock crystals to magnify objects and focus sunlight to ignite fires, to Galileo who sparked the ...

Using laser light instead of traditional mechanics, researchers have built micro-gears that can spin, shift direction, and even power tiny machines. These breakthroughs could soon lead to ...

Light therapy can boost your mood, but you need the right model. Here's what experts say about picking an effective model. Corin Cesaric Editor Corin Cesaric is a Flex Editor at CNET. She received her ...

Artificial intelligence is consuming enormous amounts of energy, but researchers at the University of Florida have built a chip that could change everything by using light instead of electricity for a ...

Unlock the power of everyday items with these three clever DIY life hacks! Learn how to craft a compact pen-light using a ballpoint pen, LED, and button cell battery, build a simple electric motor ...