Cold Facts

Under certain conditions, hot water can freeze faster than cold water—a counterintuitive phenomenon known as the Mpemba effect.

Gorillas can catch human colds and other illnesses.

If you are cold you are more likely to be hungry because you use energy to keep warm.

Gasoline won't freeze until it reaches temperatures between -40°F and -200°F (-40°C to -73°C), making it virtually impossible to freeze under normal Earth conditions.

Cold water weighs more than hot water.

The average temperature at 40,000 feet above sea level is -60 F.

Ice worms live inside glaciers and are so sensitive to temperature that exposure above 40°F causes their body enzymes to break down rapidly, killing them within minutes.

Brain freeze is caused by rapid dilation of blood vessels in the roof of your mouth when cold touches your palate, triggering pain receptors that refer the sensation to your head.