David Stahle, Department of Geosciences, University of Arkansas In a state famous for exceptional trees, the blue oaks of ...

Frank W. Davis, Bren School of Environmental Science and Management, University of California, Santa Barbara California oak ...

The children were part of the Capitol Junior Rangers program, a statewide initiative for children aged 7 to 12 to learn about California’s biodiversity.

In this video, I wood turn a heavily woodworm-infested oak log firewood into a unique art project. The process involves carefully balancing the log on my woodturning lathe and carving it with ...

Vintage Clip Art and Illustrations | Oak Tree "Old engraving of an oak tree, isolated on white. Scanned at 600 DPI with very high resolution. Published in Systematischer Bilder-Atlas zum Conversations ...

Choose from Silhouette Of A California Map stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else.