Jun 5: Shark extinction event, caffeine can't keep you functional, the pachyderm's proboscis and more…CBC Radio | Posted: June 4, 2021 9:18 PM | Last Updated: June 4, 2021Prey eat a predator, and learning about land use from Indigenous scienceImage | Great white sharkCaption: A great white shark. (©Ron and Valerie Taylor)Load ImageOpen Image in New Tab (external link)