Evidence in Earth’s natural archives, from tree rings to seafloor sediments, points to one trend. Some climate models suggest another. Here’s why are important.

Tree rings could hold clues to climate change and forest change.

Researchers have long debated the exact date of the Thera volcanic eruption. New research gets scientists closer to an answer than ever before.

Tree rings carry a wealth of information, which can be used to uncover climate data from hundreds of years ago.

The Inuit tell stories about the year that summer never arrived. Tree rings from 1783 confirm that the Laki volcano in Iceland caused the cooldown.

Trees may be more resilient to future dry spells than scientists first thought.

Researchers have shown that over the past two thousand years, volcanoes have played a larger role in natural temperature variability than previously thought,

Though it's been hotly debated for decades, tree rings may pin down the year the Thera volcano erupted over the Minoan civilization.

Widespread "perfect droughts" affect southern California water sources about six times a century, according to a study of tree rings going back to 1126.

Accelerated tree growth caused by a warming climate does not necessarily translate into enhanced carbon storage, an international study suggests.