The Dancing Plague of 1518 in Strasbourg saw hundreds of people dance uncontrollably for days — some to their deaths.

Blue food is extremely rare in nature — most blue-colored foods get their hue from added dye.

The microwave oven was invented accidentally when Percy Spencer noticed a radar magnetron melted a chocolate bar in his pocket.

The Great London Beer Flood of 1814 released thousands of gallons of beer into the streets.

Cashews grow outside the cashew apple fruit — what looks like the nut is the seed.

The Great Lakes were formed by glacial movement.

The pistol shrimp creates a cavitation bubble when snapping its claw, briefly reaching 8,000°F.

Kimchi, made from fermented vegetables and chili, has been a Korean staple for over 2,000 years.

Butterflies can see ultraviolet patterns on flowers.