The Pleistocene epoch included repeated glacial cycles.

Tomatoes were once thought to be poisonous in Europe because they're part of the nightshade family.

Sumo wrestlers follow a strict lifestyle governed by the Sumo Association, including how they eat, dress, and live.

Ancient Romans ate a breakfast food called ientaculum — often bread dipped in olive oil or wine.

There are creatures that can survive without oxygen.

The Great Fire of London began in a bakery in 1666.

Raindrops are not actually teardrop-shaped — they are spherical when small and flatten into a hamburger bun shape as they grow.

People in positive moods make more creative decisions; negative moods favor analytical thinking.

Before refrigeration, salt was so crucial for food preservation that Roman soldiers were sometimes paid in salt — hence the word 'salary.'