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About Tree Rings
Aegean Dendrochronology Project
Summer 2017 Dendro Presession Courses
Tree-Ring Open House @ Tucson Festival of Book
Sky Island Science Investigators
Art in the Bryant Bannister Tree-Ring Building
Become a Docent
Map and Directions
Life Rings Art Workshop
Tuesday, September 13, 2016
David Frank, the new Director of the Laboratory of Tree-Ring Research
Friday, August 26, 2016
The Tree-Ring Lab welcomes its new director, David Frank.
The oldest known tree in Europe
Friday, August 19, 2016
Tree-Ring Lab researchers were part of the group that identified the oldest known tree in Europe.
Tree rings predict large changes in North American forest growth
Thursday, July 21, 2016
Tree-ring data showing how forests have grown in the past help forecast their future decline under a changing climate.
Outstanding Forester of the Year award to Paul Sheppard
Thursday, June 9, 2016
Outstanding Forester of the Year award to the LTRR's Paul Sheppard.
Tree Rings reveal the history of severe drought in British Columbia
Friday, May 6, 2016
Tree rings reveal the history of severe drought in parts of British Columbia.
Valerie Trouet interviewed on Zona Politics
Friday, April 29, 2016
LTRR researcher Valerie Trouet talks about dendrochronology in a local TV interview.
LTRR featured in international awards
Friday, April 15, 2016
The LTRR featured prominently in awards distributed at the Ameridendo2016 conference in Argentina.
Temperature affects Upper Colorado River Basin streamflow
Thursday, March 10, 2016
Connie Woodhouse and Kiyomi Morino of the LTRR are authors on a paper showing that temperature modulates the influence of rain and snowfall on Upper Colorado River Basin streamflow.
Shipwrecks and tree ring evidence: fewer hurricanes when the sun was less active
Tuesday, March 8, 2016
Valerie Trouet of the LTRR and her colleagues use shipwrecks and tree rings to trace the history of hurricanes, finding fewer during a period of low solar activity.
LTRR researchers mapping the history of Medirerranean drought
Monday, March 7, 2016
LTRR researchers Kevin Anchukaitis, Ramzi Touchan and David Meko are co-authors on a paper mapping drought in the Mediterranean over the past 900 years.
Open House, Tucson Festival of Books (March 11 Only)
Monday, February 29, 2016
Saturday, March 11 only! Open house at the Tucson Festival of books.