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Press Release 08-159

Walnut Trees Emit Aspirin-Like Chemical to Deal With Stress

Discovery may help scientists better understand air quality, farm crops

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Person climbing special tower amid walnut trees.

Scientists used specially-equipped towers to measure chemical emissions from plants in a walnut grove in California.

Credit: Carlye Calvin, UCAR


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NCAR researcher Alex Guenther studies a chemical form of aspirin produced by walnut trees.

NCAR researcher Alex Guenther studies a chemical form of aspirin produced by walnut trees in California.

Credit: Carlye Calvin, UCAR


Download the high-resolution JPG version of the image. (185 KB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.