Environment

Climate

Hot summers, wild fires

Rising temperatures and earlier snowmelts in the western United States have intensified forest fires.

Environment

Pollution detective

A science fair project tackles contaminated drinking water and mosquito growth.

Plants

Pumping up poison ivy

Boosting carbon dioxide levels makes poison ivy grow faster and become more toxic.

Environment

Bald eagles forever

The U.S. bald eagle population is on the rise.

Environment

Coral gardens

An expedition to an undersea mountain reveals large corals, brilliant sponges, and other strange sea creatures.

Environment

Plant gas

Trees, grasses, and other plants may produce the greenhouse gas methane.

Environment

Out in the cold

With pollution, over-fishing, and shrinking habitats, the life of a penguin isn't getting any easier.

Environment

Forests as a tsunami shield

Trees appear to protect seaside settlements from the worst effects of a tsunami.

Environment

Unnatural disasters

The actions of people can make the destruction caused by hurricanes worse than it would be otherwise.

Environment

Shrinking glaciers

Most glaciers around the world appear to be getting smaller.

Environment

Seabirds deliver Arctic pollutants

When birds look for food at sea, they pick up and carry pollutants back to their nesting areas.

Environment

Cleaning up fish farms

Although fish farms can supply lots of food, these operations may also cause pollution and hurt wild populations.