New soft "ringbots" can crawl in air and under water, pulling small payloads when exposed to elevated temperatures or infrared light.

A new pacemaker that uses light instead of a battery could be implanted less invasively and cause patients less pain than current ones.

A new plastic-like material can go from being soft and stretchy to hard and rigid with just a catalyst and some light.

Researchers have created a "quantum flute" that coaxes light particles to interact in a way that's never been seen before.

A new tool that uses lasers to measure glaciers is small enough to fit in a backpack and be carried up steep mountains.

New findings on light and mood could improve treatment for seasonal affective disorder and depression, say researchers.

Artificial light in cities can lengthen plants' active season, research finds. That news could have important implications for people with allergies.

Visible light activates nanoscale drills that could eventually fight drug-resistant bacteria.

A laryngoscope with a wireless camera might make intubation simpler and safer. Its student designers say it could cost as little as $200.

Researchers have developed a way to use infrared light to flip diferent brain circuits on and off in mouse brains. It can control mice from 3 feet away.