
The Earth's ongoing nature losses may soon begin to hit national economies, a major UN report is to say.
The third Global Biodiversity Outlook (GBO-3) warns that some ecosystems may soon reach "tipping points" where they rapidly become less useful to humanity.
Such tipping points could include rapid dieback of forest, algal takeover of watercourses and mass coral reef death.
Last month, scientists confirmed that governments would not meet their target of curbing biodiversity loss by 2010.
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