Animals on a mountain and under the water

For Earth Day, a free poster

On Earth Day, April 22, celebrate the many species of wildlife that make the Earth's polar regions their home. This free poster is available for printing.
Illustration of wind blowing turbine (State Dept./Doug Thompson)

5 myths about wind energy

Wind energy has come a long way. Today it's more efficient and cheaper than ever. What do you think you know about wind energy that isn't true?
Two elephants (© AP Images)

Hope for elephants: Ivory demand drops in China

Demand for elephant ivory in China has dropped sharply as that country plans to end the legal trade in ivory later this year.
Landscape with green hills, lake and mountains (© AP Images/La Tercera)

U.S. group gives national parks to Chile

An American environmental group signed an agreement with Chile’s government to donate huge tracts of land for new national parks.
Illegal logging in Burma (© AP Images)

Tree DNA ‘fingerprinting’ fights rampant illegal logging

DNA "fingerprinting" has allowed timber companies to use the latest genetic technology to ensure that lumber has been legally harvested.
Long white pitched roof and adjacent red roofs (PEER Africa)

This simple product keeps buildings cool

The rural town !Kheis in South Africa is cooler than ever before with a simple, energy-efficient technology to keep buildings cool.
Mr. Trash Wheel in water (Waterfront Partnership of Baltimore)

Meet Mr. Trash Wheel, hero of Baltimore harbor

A water wheel in Baltimore, named "Mr. Trash Wheel" by residents, is churning up ideas for cleaning coastal cities around the world.
Line of wind turbines on ridge (ERCOT)

Everything is big in Texas, including wind power

It only took a few years — and good planning — to make big oil producer Texas the leader in U.S. wind energy.
Black and white mural on city wall (Graviky Labs)

This ink is made of pollution. Really. [video]

Catching carbon soot in car exhaust, Anirudh Sharma of MIT discovered a way to recycle pollution into something beautiful: Air Ink.