The first modern humans appeared on Earth 200,000 years ago, but it wasn’t until just 12,000 years ago we started to settle and farm land. Dinosaurs first appeared on the planet about 245 million years ago during the Triassic period. Around 65 million years ago most of the dinosaurs were dead, with many experts pointing to a massive asteroid strike as the cause. During those 179 million years it’s believed that more than 1,000 different dinosaur species roamed the planet. So, what can digging up those dino fossils tell us about those species and what life on Earth was like so many years ago? For those answers, we go to Paul Sereno, Professor of Paleontology at The University of Chicago.
Later in the show we discuss bringing back the woolly mammoth with Harvard genetics professor George Church and University of North Carolina biology professor Rebekah Rodgers.