SYDNEY, Australia (AFP) — A giant starfish-eating snail could be unleashed to help save the Great Barrier Reef, officials said Monday, with a trial underway to breed thousands of the rare species. Predatory crown-of-thorns starfish, which munch coral, are naturally-occurring but have proliferated due to pollution and run-off at the struggling World Heritage-listed ecosystem. Their impact has been profound with a major study of the 2,300-kilometer (1,400-mile) long reef’s health in 2012 showing coral cover halved […]