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Earth now has more than 3tn trees
03 Sep 2015 16:04
The number of trees on Earth has almost halved since the beginning of human civilisation, a new assessment has found.
There are more than three trillion trees worldwide - around eight times more than some previous estimates - according to the study led by researchers at Yale University in the US.
But around 15 billion trees are currently being lost each year as a result of deforestation, forest management and changes in land use, the research published in the journal Nature showed.
Since the start of human civilisation around 11,700 years ago the total number of trees has fallen by around 46%, it estimates.

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