Welcome to OLogy!
The science website
for kids from
the American Museum
of Natural History.

Many sauropods grew new teeth as often as once a month, as old ones wore out.

Half a million neurons form every minute during the first five months in the womb.

Koalas are not bears. They're marsupials and are more closely related to kangaroos.

Antarctica is a continent surrounded by ocean. The Arctic is the opposite, an expanse of ocean surrounded by continents.

If melted, the ice sheets covering Antarctica would raise global sea level by almost 70 meters (230 feet).

Some meteorites are small pieces of the moon.

Some meteorites are as old as the solar system.

"Shooting stars" are actually meteors.

Identical twins have the exact same genes, but their fingerprints are unique.

Fireflies aren't flies at all. They're beetles!

Bats are the only mammals that can truly fly.