Unprecedented coral bleaching in consecutive years has damaged two-thirds of Australia's Great Barrier Reef, aerial surveys have shown.
The bleaching - or loss of algae - affects a 1,500km (932 miles) area of the reef, according to scientists.
The latest damage is concentrated in the middle section, whereas last year's bleaching hit mainly the north. Experts fear the proximity of the two events will give damaged coral little chance to recover.
Prof Terry Hughes, from James Cook University, said governments must urgently address climate change.
Great Barrier Reef: Two-thirds damaged in 'unprecedented' bleaching
Across the country, wildland firefighters are staring down what could be one of the most severe...
A mega tsunami in Alaska last year in a fjord visited by cruise ships is a...
Anunciata Schwebel could only watch in horror on FaceTime while her friend and tenant slunk into...
The process of relocating people from New Orleans should start immediately, as the city has reached...
