Industrial agriculture and monocropping has caused the extinction of thousands of breeds of fruits, vegetables and livestock. The July issue of National Geographic highlights the hopeful work of seed preservation in this article, Food Ark.
A nuclear engineer by training, Dave Lochbaum worked in nuclear power plants for nearly two decades. Concerned about nuclear safety, he joined the Union of Concerned Scientists (UCS) in 1996. Today, he is one of the top independent authorities on nuclear power in the United States.