Photo of the Day

The aye aye is nocturnal.
October 22, 2019, 10:24 a.m.
This unusual animal easily freaks people out, but it's one amazing creature.
Tongass National Forest, Alaska, with sunlight filtering through trees
October 21, 2019, 8:26 a.m.
Known as the 'crown jewel' of U.S. national forests, this ancient ecosystem is at a crossroads.
Lisbon, Portugal
October 10, 2019, 1:33 p.m.
Austin, Athens, Venice and Lisbon are the latest cities to meet global goals.
Kirtland's warbler
October 8, 2019, 3:10 p.m.
The Kirtland's warbler was nearly extinct in the 1970s, but it has finally recovered, conservationists say.
ocean view from the village of Clovelly, England
October 7, 2019, 8:26 a.m.
The benefits of 'blue space' may be especially important for lower-income communities, researchers say.
A black spot on Jupiter.
October 4, 2019, 12:43 p.m.
NASA explains what that giant black spot is all about.
Turdus philomelos, Song thrush, sings
September 30, 2019, 8:28 a.m.
There are fewer predators but it's not always as safe as it should be.
A black rhino mother and calf.
September 20, 2019, 3:36 p.m.
World Rhino Day has us thinking about how amazing this animal really is, and how close we are to losing it forever.
Stagg Tree, a giant sequoia at Alder Creek grove
September 20, 2019, 11:25 a.m.
Alder Creek is home to hundreds of giant sequoias, from seedlings to millennia-old Methuselahs.