Today on Buckmaster – Dr. David Kring, senior staff scientist and geologist at Lunar and Planetary Institute in Houston. Dr. Kring is credited with the discovery that an asteroid collided with the earth on the Mexico Yucatan peninsula 65 million years ago wiping out the dinosaurs. Then, is the world facing a chocolate crisis? We get the answer from Dr. Judy Brown, a plant virologist at the University of Arizona’s College of Agriculture and Life Sciences. Plus get ready for high speed drone racing at UA Biosphere 2.