Ecosystems

Animals

Missing moose

By studying population patterns, scientists hope to figure out why moose in some areas are in trouble.

Environment

Saving wetlands

In Louisiana and elsewhere, wetlands are disappearing, threatening plant and animal life.

Environment

Alien invasions

Around the world, plants, animals, fungi, and other life forms are ending up in places where they don't belong.

Environment

Less mixing can affect lake’s ecosystem

Warming a large lake can cut microorganism populations and disturb its food chain.