Skip to main content
Fig. 1 | Evolution: Education and Outreach

Fig. 1

From: How Old is Earth, and How Do We Know?

Fig. 1

Dating by tree rings, or dendrochronology, provides a continuous record back more than 20,000 years. Tree rings also preserve data on forest fires, climate change, and other environmental conditions. Source: Wikicommons; photograph by Mark A. Wilson

Back to article page