What the Great Barrier Reef looks like after the biggest coral die-off ever recorded

What the Great Barrier Reef looks like after the biggest coral die-off ever recorded

Scientists say warm seas have killed two-thirds of a 700km (435 miles) stretch of coral on the Great Barrier Reef. The damage is concentrated in the northern section of the reef. (The central and southern sections remain almost intact.) “This one is by far the most extreme and we’ve seen three of these events now…