Harvesting caviar from sturgeon in the Caspian Sea comes at a great cost—the fish's survival.
As bats die across the eastern United States, biologists have more questions than answers.
The wildfires that recur in southern Australia are predicted to worsen as the globe warms.
The remains of the world's largest snake tell a story of the ancient tropics.
Light reflected off cars, buildings, and roads can derail wildlife.
Climate change appears to be causing a coral decline in the Great Barrier Reef.
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.
For marine life, climate change means more than warming.
An experiment uncovers a major killer of this popular sport fish in San Francisco Bay.