View of Earth's curvature, with dark space above (NASA)

Be the first to see ultra-high-def video from space

Mark your calendars: On April 26, NASA is broadcasting the first live ultra-high-definition video from the International Space Station.
Scimitar-horned oryx in Chad (© Environment Agency–Abu Dhabi)

Rare antelopes return to Africa

Earth Day is April 22. Celebrate a success story and learn about the reintroduction of the oryx to the wild.
Group of cheetah cubs in straw bed (Courtesy of Smithsonian Conservation Biology Institute)

Cheetah cub boom: 10 in a week! [video]

Two litters of cheetah cubs were born during a single week at the Smithsonian Institution’s research facility.
Earth seen from space (© AP Images)video

April 21: Earth Day – seeing our planet from above and...

Join us for an interactive webchat to learn how different ways of seeing our planet affect how we think about it. Celebrate Earth Day with us!
Sun shining on solar panels (Shutterstock)

How one school system is going solar

A small Indiana town has always relied on the sun to grow crops but now will count on it to power schools.
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.