Thursday, October 4, 2012

Global ecosystems under threat

Hungry starfish are being blamed for helping to destroy the largest living organism on Earth. Australia's Great Barrier Reef has lost 50 percent of its coral since 1985. The added threat of global climate change - and the predicted warming of the world's oceans the future of some of the world's most important ecosystems hangs in the balance. Al Jazeera's Tarek Bazley reports

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