Antarctic life and Great Barrier Reef bleaching

We’re getting into hot and cold water this week, as Claire talks to Dr Jarrod McKenna about the importance of Antarctica and its wildlife, including plankton, whales and penguins; and Chris speaks to Dr Maya Srinivasan from James Cook University about the current mass coral-bleaching event on the Great Barrier Reef, what causes it, how corals can recover, and what needs to be done to protect the reef.