Projected slowdown of ozone loss by the end of the current decade can be seen as a first sign of ozone recovery
Chimps display altruistic behavior..
People infect animals, too.
Did Pterosaurs sail, as well as fly?
Even the spineless feel pain.
Swine see their world—if not themselves—in the mirror.
Human activity is behind mounting sea levels.
Climate change sends the growth of ancient trees into overdrive.
Northern elephant seals sleep on the descent.
After centuries of moving through the Irish countryside, a group known as Travellers has come to rest.
Algae, plants and humans: three groups of organisms that used chemistry to change the planet.
Peaks protected fifty years ago by the Wilderness Act no longer keep mountain goats safe from human impact.
By the 1920s, California had lost all of its grizzly bears—once considered a distinct species and an emblem of the state.