Oct 12 - Nature: Coral Die-off Marks Earth’s First Climate ‘Tipping Point’, Scientists Say

Surging temperatures worldwide have pushed coral reef ecosystems into a state of widespread decline, marking the first time the planet has reached a climate ‘tipping point’, researchers announced today. They also say that without rapid action to curb greenhouse-gas emissions, other systems on Earth will also soon reach planetary tipping points, thresholds for profound changes that cannot be rolled back.