BBC: Waves of carnivorous starfish are eating their way through Australia's Great Barrier Reef - and sugar cane farming is being blamed.
Researchers at Australia's Institute of Marine Science (AIMS), just outside Townsville, Queensland, in north-east Australia, have mapped the pattern of destruction.
"Coral cover is half of what it was 27 years ago, coral cover is going down at an alarming rate." Dr Katharina Fabricius, coral reef ecologist and AIMS principal research scientist, told the BBC World...