Gene copying mistakes may have prodded the evolution of gorillas, chimps, and humans.
The remains of the world's largest snake tell a story of the ancient tropics.
The germs that live inside us have evolved with us -- and tell a story of early human migrations.
Light reflected off cars, buildings, and roads can derail wildlife.
Can you both learn something new and recall something old at the same moment?
Climate change appears to be causing a coral decline in the Great Barrier Reef.
A fresh look at the human fossils on Flores Island hints at their evolutionary history.
This landmark American tree is poised to return to eastern woodlands.
China is planting an enormous swath of forest to keep dust storms at bay.
Biologists learn why some HIV-positive people stay healthy for decades.