Cultural coral spawning on the Great Barrier Reef gives hope of renewal after ecological threats

The World

Earlier this week, marine biologists, divers, students and photographers captured colorful footage of annual coral spawn on the Great Barrier Reef off the coast of Queensland, Australia. It's being hailed as a positive sign that the world's biggest coral reef ecosystem can recover from climate change. Marco Werman speaks with Anne Cohen of the Woods Hole Oceanographic Institute.