New evidence indicates the primary cause of the extinction of one of Australia’s top predators, the marsupial lion (Thylacoleo carnifex), around 40,000 years ago was likely a result of changing weather patterns and loss of habitat, not human impacts. The aridificaiton of Australia impacted the hunting effectiveness or preybase of the marsupial lion (Thylacoleo carnifex) contributing to its extinction. Image credit: Peter Schouten. Vanderbilt University...