Hot water can freeze faster than cold water – this is called the Mpemba effect.
Though still not fully understood, in some cases hot water freezes quicker due to evaporation, convection, and supercooling.

Sharks existed before trees.
Sharks have been around for over 400 million years, while the first trees appeared around 350 million years ago.

Oxford University is older than the Aztec Empire.
Teaching began at Oxford as early as 1096, while the Aztec civilization is generally dated from the 14th century.

Your stomach gets a new lining every 3 to 4 days.
This is to prevent the acid from digesting your stomach itself.

A day on Venus is longer than a year on Venus.
Venus takes about 243 Earth days to rotate once but only 225 Earth days to orbit the Sun.

The Eiffel Tower can grow over 15 cm in summer.
Due to the expansion of metal in heat, the Eiffel Tower becomes taller during hot weather.

There's a species of jellyfish that can technically live forever.
Turritopsis dohrnii can revert its cells back to an earlier stage of life, essentially avoiding death from aging.

Wombat poop is cube-shaped.
This helps prevent it from rolling away and is used to mark their territory. Scientists say the intestines of wombats shape the feces into cubes.

Sloths can hold their breath longer than dolphins.
While dolphins can hold their breath for about 10 minutes, sloths slow down their heart rate and can hold their breath up to 40 minutes.

Bananas are berries, but strawberries aren't.
According to botanical definitions, bananas qualify as berries because they develop from a single ovary and contain seeds inside. Strawberries, on the other hand, grow from a flower with multiple ovaries.