Once the province of classrooms, boardrooms, and hardcore home cinema enthusiasts, projectors are now more accessible than ...

Welcome to our live blog tracking the latest news and developments from the United States. Stay updated with real-time ...

Upper class signals show up as long-running, reciprocal relationships—mentors, family friends, former teachers, ...

The Irish mathematician and physicist William Rowan Hamilton, who was born 220 years ago last month, is famous for carving ...

When you shine a flashlight into a glass of water, the beam bends. That simple observation, familiar since ancient times, ...

In January I wrote a piece titled “ 5 Physics Equations Everyone Should Know .” Lots of you weighed in with your own ...

Invasion of the Body Snatchers, The Girl Can't Help It, and Nightfall are all among the best movies of 1956 that became ...