Adidas releases a new ball for every World Cup. At the highest level of play, a ball that behaves in unexpected ways can throw players off. A sports physicist explains the science of this year’s ball.

Ski jumpers do everything they can to counteract the effects of gravity and fly as far as they can down hills.

It may look like athletes in bobsled, luge and skeleton simply grab a sled and hang on until the bottom, but high-speed physics and tiny motions mean the difference between gold and a crash.

Starship's groundbreaking design will help it land safely on Mars one day.