Parts of Great Barrier Reef dying at record rate, alarmed researchers say - 'Staggering' environmental impact on Great Barrier Reef caused by cruise ships, say conservationists - Not too warm and not too cold--finding the Goldilocks Zone of the Great Barrier Reef - Cool water from the deep could protect pockets of the Great Barrier Reef into the 2080s - Cruise ships urged to 'clean up their act' amid concerns toxic effluent being dumped on Great Barrier Reef - Parts of Great Barrier Reef suffer highest coral mortality on record - 'Graveyard of corals' found after extreme heat and cyclones hit northern Great Barrier Reef - Parts of Great Barrier Reef record highest coral deaths due to heat, storms - Parts of Great Barrier Reef suffer highest coral mortality on record - Parts of Great Barrier Reef suffer highest coral mortality on record