Great Barrier Reef avoids 'in danger' listing - but what can be done to ensure its future?

Conservationists are calling for greater government action to protect the Great Barrier Reef, as a looming El Nino weather system threatens more coral bleaching. In a draft decision, the UNESCO World Heritage Committee has recommended against putting the reef on its list of sites in danger, while requesting greater ambition on climate change and efforts to improve water quality.