Historical record

Looking back and looking forward, the Endangered Species Act turns 50: How did it do?

Princeton on ice: Documenting climate change at the ends of the Earth

Study of Arctic shows new clues about ice age and when land connecting Asia to North America emerged

Climate change and the ocean: Oxygen-poor zones shrank under past warm periods, scientists discover

Jerry Zee

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Tuskless elephants in Africa a response to population bottleneck caused by war

Arctic waters unlikely to experience climate change plankton bloom

Anthropogenic activity has disrupted Earth’s energy balance

Climate change presages a hot future in the tropics

Cyclone intensity likely the result of climate change