Contact: Jennifer Fitzenberger
University of Arizona
Caption: Ramzi Touchan of the University of Arizona's Laboratory of Tree-Ring Research teaches students techniques for taking tree-ring cores during his field work in Algeria.
Credit: Photo courtesy of R. Touchan, University of Arizona.
Usage Restrictions: This photo may be used only to illustrate a story about the research described in the release, 20th Century One of Driest in Nine Centuries for Northwest Africa.
Related news release: 20th century one of driest in 9 centuries for northwest Africa