More than one million people in eastern Montana and the Dakotas are under extreme cold warnings on Monday and Tuesday.

An extra 2.3 million people in European cities could die as a result of extreme temperatures — both hot and cold — by the end of the century if countries do not take action to mitigate climate change, ...

Errors and anomalies do not stop at individual cases; they permeate extreme-age research. Many of the world’s oldest people are reported to be alive on paper long after they died. The first man ...

Incarcerated people in Colorado are exposed to climate-related extreme heat and cold, plus flooding and wildfires. Because they're unable to escape these hazards, their health suffers and some die.