Impact Factor 4.912 | CiteScore 5.0 More on impact › TABLE OF CONTENTS Thomas J. F. Goreau* Global Coral Reef Alliance, Cambridge, MA, United States Coral reefs are the fastest collapsing ecosystems from accelerating global warming, sea level, disease, and pollution. Urgent steps are essential to regenerate them, and their biodiversity and environmental services, if there is to be a sustainable “Blue Economy”.