“Over the last half a billion years, there have been five mass extinctions, when the diversity of life on earth suddenly and dramatically contracted. Scientists around the world are currently monitoring the sixth extinction, predicted to be the most devastating extinction event since the asteroid impact that wiped out the dinosaurs. This time around, the cataclysm is us.” (The Sixth Extinction by Elizabeth Kolbert)
- Dr. John Willson, Assistant Professor, UA Department of Biological Sciences
- Dr. Walt Manger, Emeritus Professor, UA Department of Geosciences
