Coral bleaching in the Great Barrier Reef

This episode the grey matter in question is not, in fact, the brain, but the bleached corals of the Great Barrier Reef. Professor Justin Marshall leads the Sensory Neurobiology laboratory at the Queensland Brain Institute. He talks about working with Sir David Attenborough, the citizen science project Coral Watch, and the unprecedented coral bleaching that is unfolding on the Great Barrier Reef.