The majority of fruits we commonly picture in the grocery store (apples, peaches, walnuts, plums, etc.) originated in south-western Asia, in countries such as Kazakhstan, Uzbekistan, Kyrgyzstan, etc. This region is a veritable "Garden of Eden", with a huge array of useful fruit and nut trees growing naturally throughout the region. The topography is extremely diverse, including steep mountainous terrain, variable soil, and variable climate types, which produce a wide variety of genetic selection pressures, and hence tremendous natural variation within species. Kyrgyzstan: The birthplace of our common supermarket fruits Less commonly known, is that North America has its own list of valuable native food crops, including sunflowers, pumpkins, and strawberries. But the US also hosts a native, almost forgotten fruit known as paw paw ( Asimina triloba ) that is currently seeing a resurgence of interest. Paw paw: America's largest native fruit Paw paws are known a...