Many Antarctic Emperor penguin colonies could decline by more than half in less than a century.
The virus took the U.S. by surprise. Thanks to climate change, it’s here to stay.
The National Climate Assessment isn’t just about our future. It’s about our scarcely recognizable present.
One tiny Caribbean island is scrambling to save its coral in the face of global warming.
Millions of Americans are evangelical Christians. Climate scientist Katharine Hayhoe is persuading them that our planet is in peril.