Scientists quickly pronounced the summer 2021 heat wave that hit western North America to be unprecedented, but they had no long-term physical proof. Now they do.

PhD student Rose Oelkers discusses her work in the Amazon and what we can learn from the trees if we listen closely.

A dendrochronologist explains how tree rings can teach us about our past, present, and future.

Scientists are uncovering centuries of climate data and human history from giant old timbers saved from demolished structures.

Un nuevo Atlas Sudamericano de Sequía revela que las sequías severas expandidas y los períodos inusualmente húmedos sin precedentes han ido aumentando desde mediados del siglo XX.

A new South American Drought Atlas reveals that unprecedented widespread, intense droughts and unusually wet periods have been on the rise since the mid-20th century.

Using old tree rings and archival documents, historians and climate scientists have detailed an extreme cold period in Scotland in the 1690s that caused immense suffering. It may have lessons for Brexit-era politics.

On a peninsula within sight of New York City, researchers are studying trees dating as far back as the early 1800s. Rising seas and more powerful storms, both fueled by climate change, could eventually spell their end.

Centuries-old trees on a peninsula near New York City could provide an important record of past storms. Researchers recently traveled there to sample the trees before they are wiped out by rising seas and powerful storms.

Measurements of stable isotopes in tree rings may expand the climate information that scientists can get from old trees.