If you’ve been to a wedding or a downtown coffee shop in the last 10 years, you’ve probably seen those little lightboxes that are so popular these days. They consist of letters placed on a plastic ...

The U.S. and Israel have ignited a campaign to topple the Islamic Republic—with little thought to what comes after. Robin Wright reports. The funding debate in Congress is over immigration-enforcement ...

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.