Biotechnology can save the endangered American Chestnut
The American Chestnut tree used to grow in vast numbers across most of the eastern United States. Today, however, it has all but vanished from its natural region. The Chestnut blight, which is believed to have been brought to America from China at the start of the 20th century, has laid waste to more than four billion of the once mighty trees. Advances in genetic modification, however, could be used to save this important species and restore its numbers.