A new open-access book demystifies climate modeling without using a single equation.

Melting ice sheets and glaciers are slightly slowing Earth's rotation.

In 50 years, summers across most of the globe could regularly be hotter than any summer experienced so far by people alive today. Reducing carbon emissions could cut the risk.

The future pattern of population growth, not climate change, is likely to be the dominant factor in determining whether the amount of land burned by fires increases or decreases globally this century.

The ORCAS field project records carbon dioxide levels exceeding 400 ppm over one of the remote regions of the globe.