Climate change is causing devastating effects around the globe. Several major coral bleaching events have happened since 1979 (1). In 2016 and 2017 the world’s coral reefs, particularly the Great Barrier Reef (2), experienced a bleaching event like none other. If you have read our summary about coral reefs, you know that coral reefs are an important part of the world. Read on to find out how coral bleaching happens and how we can stop it.