Demand to save the world's coral reefsDarko Janjevic (with AP) 06/25/2016June 25, 2016What happens when coral gets stressed? Global warming and environmental changes can cause corals to lose their color, and hinder their ability to feed and reproduce. Scientists and policy makers are sounding alarm bells.https://p.dw.com/p/1JDZFImage: picture alliance/WILDLIFEAdvertisement