Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

Harvard scientists created a light beam called an “optical rotatum” that twists and changes torque as it travels, mimicking natural spiral patterns. It offers new possibilities for controlling ...

3. Laser Treatment What it is: A form of light therapy that uses lasers. How it works: A thin beam of light targets psoriasis without affecting nearby skin. Laser types: Excimer laser. This ...

Alter is a senior correspondent at TIME. She covers politics, social movements, and generational change, and hosts TIME's Person of the Week podcast. She is also the author of The Ones We've Been ...

i.e. coloured light beams projected horizontally and vertically into the sky.” The council’s highways officer said of the plans: “Overall, the proposed advertisements will be modest in size ...