Mark your calendars: On April 26, NASA is broadcasting the first live ultra-high-definition video from the International Space Station.
Earth Day is April 22. Celebrate a success story and learn about the reintroduction of the oryx to the wild.
Two litters of cheetah cubs were born during a single week at the Smithsonian Institution’s research facility.
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!
A small Indiana town has always relied on the sun to grow crops but now will count on it to power schools.
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.
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?
Demand for elephant ivory in China has dropped sharply as that country plans to end the legal trade in ivory later this year.
An American environmental group signed an agreement with Chile’s government to donate huge tracts of land for new national parks.