Why did the asteroid kill the dinosaurs, but not us? | Tianqi Xie | TEDxUniversityofSaskatchewan
We’ve all seen the headlines — dinosaurs killed by an asteroid — but is this million-year-old case fully closed? Scientists have a lot of clues, but many mysteries remain: how did the asteroid do it? And, most importantly, if life on earth was wiped out, then how is it possible for human beings to be alive today? Dr. Tianqi Xie puts on her detective hat to reconstruct this ancient crime scene using rocks as witnesses to uncover our suspect and piece together the events and aftermath of one of the oldest mysteries on earth.Dr. Tianqi Xie (PhD) is an assistant professor at the Department of Geological Sciences in the College of Arts and Science at the University of Saskatchewan (USask). Her research focuses on the behavior of common minerals under high pressure high temperature conditions relevant to the evolution of rocky planetary bodies in our solar system. Dr. Xie received her bachelor’s degree in gemology and master’s degree in mineralogy at China University of Geosciences (Beijing) and earned her PhD degree in Geophysics at University of Western Ontario. She then moved to Stony Brook University for a postdoctoral fellowship at the Mineral Physics Institute. Her work uses synchrotron facilities around the world, including Advanced Photon Source, Deutsches Elektronen-Synchrotron (DESY), European X-Ray Free-Electron Laser Facility (European XFEL), and our Canadian Light Source. She is also a certified gemologist who loves antiques.
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