Unfortunately, this old saying doesn't make a lot of sense in the context of modern science.
Ever wonder why operating rooms are so cold? Find out on today's A Moment Of Science.
The Pompeii worm proves invincible to the world's harshest conditions.
Have you ever dipped your toe into a hot bath and felt a flash of icy cold just before you realize that its really burning?
Does the amount of sleep I get affect how likely I am to catch a cold?
Lab mice are kept in cold labs which can be a huge problem.
It sounds crazy, but household refrigerators keep food cold by bringing liquid fluorocarbon to a boil.
Learn more about the physics of hot air and why mountain tops are so cold.
All the refrigerator does is move heat, or energy, from one place to another. As the food inside the refrigerator loses its heat and gets colder.
By synchronizing movements and huddling with one another, Emperor penguins can stay warm in the coldest place on Earth.