A new method works like a blood test to identify heat-stressed corals that need protection from warming ocean waters linked to climate change.

"The time is now to prevent a potential devastation to the region's waters and the livelihoods and health of millions of people..."

"Understanding how some corals can survive prolonged heatwaves could provide an opportunity to mitigate the impact of marine heatwaves on coral reefs..."

Limited access to iron at high ocean temperatures may harm coral resistance to a warming ocean, a new study shows.

Red Sea coral reefs in the Gulf of Aqaba withstand water temperature irregularities that decimate other corals. It's time to save them, say researchers.

"...it is possible to take some local actions such as reducing nutrient pollution to give reefs a chance, at least in the near term."

Fishing practices that selectively remove large parrotfish could put corals at risk, researchers warn.

"The best-case scenario is that we have rapid and widespread reduction of greenhouse gas emissions in the near term, the next 20 years. The corals in the Gulf of Mexico are hardy."

"If corals constantly are dealing with microplastics, it might not kill them, but there will be less energy for them to grow and to reproduce."

Stronger El Niño events are part of a strange climate pattern that appears unique to the Industrial Age, according to coral records spanning millennia.