What are the biggest unknowns about the asteroid impact and extinction event that wiped out non-avian dinosaurs? 🦖☄️ In this video, Dr. Rachel Phillips (aka: Geo Girl) takes us through 6 of the biggest mysteries that remain about this event and the research working toward solving these mysteries that she learned about on a recent GSA Field Trip. Participants not only got to visit outcrops of the KPg boundary in Texas but also the Gulf Coast Core Respository at Texas A&M! If you'd like to go on