Are you curious about the world we live in — about trees, plants, animals, air, and water? Do you look at a leaf on the ground and wonder where its bright color came from, or what made it fall? If so, you are not alone. For some people, this curiosity takes them on adventures than can last a lifetime.

Discovering the answers can be really tricky, since nothing exists by itself. Everything in nature is connected, and often those connections are not obvious. Figuring them out is like doing puzzles, or using clues to solve a mystery.

This is a story about people looking for clues to solve some of nature’s mysteries. It is a true story, about real people. Curious people. Just like you.