Reading a physical book before bed improves sleep quality more than reading on a screen.

Genghis Khan killed so many people that it may have cooled Earth's climate by reducing agricultural CO₂ emissions.

The Boston Marathon is one of the oldest annual marathons.

Particles can exist in multiple states until observed.

Particles can exist in multiple states until observed.

The longest recorded fart is 2 minutes and 42 seconds long.

The QWERTY keyboard layout was designed partly to slow typists down and prevent typewriter jams.

High jumpers use the Fosbury Flop — jumping backwards over the bar — introduced by Dick Fosbury at the 1968 Olympics.

Ancient Greek athletes competed naked in the original Olympics — the word 'gymnasium' comes from the Greek for 'naked.'