Blue light is a high-energy part of visible light from the sun, screens, and light-emitting diode (LED) bulbs. Your cornea and lens don’t block blue light the way they block ultraviolet (UV) rays.

Noise cancelling headphones filter out the sounds we don’t want to hear. Presenter Alex Lathbridge explores whether we could take the same concept and cancel out light. Show more Noise cancelling ...

This image, taken with ESO's Very Large Telescope (VLT), seems to have captured a cosmic hawk as it spans its wings. While ...

Intense pulsed light (IPL) therapy, also known as a photo facial, is a way to improve the color and texture of your skin without surgery. It can undo some of the visible damage caused by sun exposure ...