This week’s show is our 50th, a number that looked so distant a year ago. Today we talk with Dr. Mark Loewen, a paleontological research associate at the Natural History Museum of Utah, and associate professor in the Department of Geology and Geophysics at the University of Utah, about a Jurassic Period carnivore dubbed "AJ," a new species of allosaurus, found in Dinosaur National Monument in Utah. Lisa Dittman, chief of interpretation at Saratoga National Historical Park in New York, provides us with a short Revolutionary War history tour of the park. It was on that landscape in 1777 that the British army suffered its very first defeat on the battlefield.