A drug that helps block the growth of cancer cells, irinotecan is derived from a tree with banana-shaped pods found only in China and Tibet and aptly called the "Chinese Happy Tree." Yet, this tree and many other potential sources of future treatments are endangered and could soon be gone forever.

Read more:http://news.mongabay.com/2010/0614-nature_oped_langlie-lesnik.html#ixzz21MKWeNQe


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