Dry ice is "dry" because it doesn't contain any water. In fact, dry ice is actually frozen carbon dioxide.
Find out why dry ice doesn't actually melt. Explore what property of dry ice creates its spooky fog effect. Discover science experiments can also double as Halloween props — and why Martians could snowboard.
While the idea of human cannibalism is definitely disgusting (not to mention illegal), there are a number of animals that eat their own kind. One type of shark eats its siblings before it's even born.
While eating one another seems like it should be a bad thing for the survival of a species, that's not necessarily so. Find out why animal cannibilism can make evolutionary sense.
Have you ever been really excited, or really scared? Your heartbeat was racing and maybe you felt a surge of energy. That was the adrenalin in your body going to work.
Adrenalin is just one of the hormones in the human body produced by the endocrine system. This group of glands is responsible for regulating many body functions. Find out more.
Bats have been feared for centuries. Too bad: What makes bats fearsome is also what makes them amazing.
Bats are the only mammals that experience powered flight. They're one of only a few mammals that use echolocation. And bats play an important role in pest control and pollination. Investigate the misunderstood bat.
A spooky, dry ice fog at your Halloween party. Jack-o-lanterns lit with green flames thanks to boric acid and methanol. And recipes for fake blood and flesh.
You'll find all those treats and more in this collection of games, activities, demonstrations, and articles with a decidedly ghoulish theme.