Coral reefs cover less than one percent of the seafloor, and yet they're home to a quarter of all marine life, making them some of the most biodiverse places on Earth. But their future looks bleak. Decades of environmental threats like warming waters and ocean acidification have pushed reefs to the brink. Can we use science to bring them back?

Originally released by Knowledgemotion, 2018. Streaming video file encoded with permission for digital streaming by Infobase on February 21, 2020.