08 July, 2019

Climate change could be paused by planting trees, researchers say, as they map out available land

Planting trees to reduce the amount of carbon dioxide in the atmosphere seems like a no-brainer in the fight against climate change.
Rows of new saplings in a field.
Australia is one of six countries that together hold
around 50 per cent of the world's tree planting potential.
But until recently it's not been clear how much land we'd need to make a tangible difference to warming, and whether we'd need to reclaim farm and residential land to do it.
Now new research published today in Science estimates there's enough suitable unused land on the globe for reforestation to store around 205 gigatonnes of carbon.
That's enough to buy us about 20 years in the fight against climate change, according to researcher Jean-Francois Bastin from the Institute of Integrative Biology in Zurich.

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