Give every cloud a sea salt lining to save reefs

摘要

Corals are in dire straits, so it will take an ambitious plan to save them. Will cooling the climate locally by making clouds brighter help? Corals face a perfect storm of threats including acidifying oceans, invasive predators and tropical storms. Warmer waters also put them under stress, making them expel photosynthetic microbes that provide most of their energy as well as their vibrant colours, leaving them a bleached white. Without symbiotic microbes, the corals will die.