An animated sequence that shows the key differences between living things, dead things and things that have never been alive. In a park setting, we see birds, trees and rabbits. The commentary ...

But how about using living things—like trees and coral reefs—and everyday occurrences—like snowfalls—to look at what's happened in past climates in order to understand what's happening ...

The environment around us is full of dead, living and non-living things. Trees and animals are living things. Dry leaves on the ground are dead, but they were once part of a living tree.