Calling your inner five-year-old! Science writer Brian Switek ("My Beloved Brontosaurus") joins Cara to talk about one of her favorite topics--dinosaurs! Topics covered include evolution debates in popular culture, why there should be feathered dinosaurs in Jurassic Park 4, and how dinosaurs evolved to become modern birds. Follow Brian: @Laelaps.
Are there parallel universes beyond our own? Is time a human construct, or does it exist outside of us? And what the hell is the Higgs Boson, anyway? Dr. Sean Carroll (Caltech theoretical physicist and author) sheds light on these and other mysterious topics in cosmology. Follow Sean: @seanmcarroll.