Add Yahoo as a preferred source to see more of our stories on Google. 10'000 Hours / DigitalVision via Getty Images Do you really know your family? Playing a game could help you find out. Whether you ...

NPR's A Martinez and Steve Inskeep answer holiday trivia questions from "Southern Living Magazine" senior editor Betsy Cribb Watson. Where did this music come from? Play along at home as A Martínez ...

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...: ...

Like millions of Americans, you probably have strong feelings about how the president should lead, what Congress should do and how the courts should rule, but do you know what gives them those powers ...