Coral reefs were once thought of as indestructible, but we are now losing corals at an ever-faster pace. Halting the loss of coral reefs depends on two major lines of action: keeping global temperature rise to less than 1.5°C and actively restoring coral reefs through propagation of climate-resilient corals and “replanting” them on damaged reefs. Joanie Kleypas provides the latest information on the coral reef crisis and discusses her project in Costa Rica to raise corals and how it has changed her relationships with coral reefs and people. Image: [Pexels](http://https://www.pexels.com/photo/close-up-photo-of-coral-reef-1739807/)