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How many trees are there in the world?

It’s a simple question: how many trees are there on Earth? The answer required 421,529 measurements from fifty countries on six continents. Now this new data has been combined to produce a stunning visualisation of our planet as you’ve never seen it before. Find the full paper on mapping tree density here: http://www.nature.com/doifinder/10.1038/nature14967.

02 September 2015