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Welcome to the website of the Cornell Tree-Ring Laboratory, home of:

Teaching and Research

We need your samples!

  • If you have samples that you would like us to examine, please see our 'we need your samples' page which includes sampling guidelines and instructions on how to send us your samples.

What is dendrochronology?

Juniper tree

Learn more about dendrochronology and our laboratory procedures.

About our projects

Sturt in a forest

Read more about the Aegean and Near Eastern Dendrochronology, and the New York and NE North American Dendrochronology projects.


Brita measuring

Learn more about our open source dendrochronology software.

Take a virtual tour of our lab