Around 0.9 billion hectares (2.2 billion acres) of land worldwide would be suitable for reforestation, which could ultimately capture two thirds of human-made carbon emissions.

The Crowther Lab of ETH Zurich has published a study in the journal Science that shows this would be the most effective method to combat climate change.

The Crowther Lab at ETH Zurich investigates nature-based solutions to climate change. In their latest study, the researchers showed for the first time where in the world new trees could grow and how much carbon they would store.

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