There are some 73,000 species of trees on Earth, according to one recent estimate. The writer Daniel Lewis zeroed in on a tiny fraction of them for his new book, "Twelve Trees." Each chapter is one ...
Challenging UNDATED (CNN) -- The first time Sam Van Aken saw tree branches being grafted and grown onto other trees, he likened it to Frankenstein. Yet, when the process became a full-time fascination ...
The distinctive scent of fir trees is appealing to consumers and may also help repel pests and deer. UC Davis biologists are taking part in a new project to study how trees make these scents and to ...
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