Why do leaves change colors?

Ever since I was a kitten, I’ve loved picking up big maple leaves in the fall. I’d take them home, put them under a piece of paper, and rub the side of a crayon over the top. It makes a great print of the leaf.

Leaves actually get their color from things called pigments. While scientists can use chemicals to make different crayon colors, nature can use pigments to create its own colors.

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Dr.UBees

What is the smallest insect on Earth?

When I saw your question, I set out to explore with my bug net and a magnifying glass. I was searching all around for tiny insects when I ran into my friend Laura Lavine, a Washington State University scientist who studies bugs.

She said there are nearly a million different kinds of insects on Earth. The smallest of all the known ones are called fairyflies.

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