The science pros at The King of Random explain the physics of the hot potato game. U.S. Issues New Travel Warning as Disease Spreads

Sports coaches have always made decisions based on experience, observation and intuition. But they are increasingly relying on hard evidence. Behind the scenes, a quiet revolution is transforming sport—driven not by human skills but by data.

George R.R. Martin, Martha Wells and other writers shared backstories about their work at Worldcon, the world's premier sci-fi convention.