From using words to overthrowing regimes, shared awareness is necessary for people to coordinate. The cognitive scientist explains to Nature how it works. When Everyone Knows That Everyone Knows...: ...

It's the age-old question. You've been going out with your special someone for a few months (or weeks? days?) and you're starting to relate to Taylor Swift singing, "You can hear it in the silence, ...

Those that have attained a college degree, are homeowners, able to send their children to college and have discretionary income consider themselves members of the middle class. Attempting to clearly ...

At some point in the past decade or two, dance-music d.j.s discovered a way of punctuating their sets with a prank. Just as the music was reaching a crescendo, it would glitch, then cut out completely ...

Before I became an international travel journalist, I was a screenwriter in Hollywood. At almost every pitch meeting, business lunch, and party, I met interesting, smart people. Most of them spoke ...

Sharks are formidable fish, having survived multiple mass extinction over hundreds of millions of years. But how much do you know about these misunderstood creatures? Take our science quiz to find out ...