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

There are creatures that can survive without oxygen.

People are more creative when they are tired.

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

King Henry I of England allegedly died after eating too many lampreys.

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

Lemons float but limes sink — limes are slightly denser than water.

Triceratops had a large bony frill that may have helped with defense or display.

The surgeon's checklist, based on aviation safety protocols, has reduced surgical deaths by over 40% in hospitals that use it.