A tropical-like fruit here ... was straight from the tree. I was intrigued. So I decided to hunt for a pawpaw myself. D.C. nature guide Matt Cohen showed me how to find them.

These hard-to-find fruits are sought after for their ... and Mississippi (3). Pawpaws are the fruit of the Asimina triloba tree, which is native to the eastern United States and southern Canada.

africana trees ... because the wild chimps are unaccustomed to humans. Through the lens, researchers discovered that chimpanzees consistently opted for the alcoholic T. africana fruit over less ...