The Mona Lisa was considered an unremarkable painting until it was stolen in 1911 — the resulting publicity made it famous.

The first Winter Olympics were held in Chamonix, France, in 1924.

The fastest tennis serve ever recorded was by John Isner at 253 km/h (157.2 mph).

Usain Bolt's top recorded speed during his 100m world record was 44.72 km/h (27.8 mph).

Particles can exist in multiple states until observed.

The Mona Lisa was considered an unremarkable painting until it was stolen in 1911 — the resulting publicity made it famous.

Figs are not a fruit in the traditional sense — they are inverted flowers that bloom on the inside of the pod.

At the 1904 St. Louis Olympics, the marathon was so chaotic that the first man to finish was disqualified for riding part of the way in a car.

The Blues music genre gave birth to jazz, rock and roll, R&B, and much of modern popular music.