Great Barrier Reef Waters Hottest in 400 Years, Study of Coral Reveals <img width="128" height="52" src="https://www.sciencealert.com/images/2024/08/great_barrer_reef_turtle.jpg" alt="great barrier reef with turtle"/> "Wake-up call to humanity." https://www.sciencealert.com/great-barrier-reef-waters-hottest-in-400-years-study-of-coral-reveals