Truthdig - Swiss scientists have identified an area roughly the size of the United States that could be newly shaded by planting more trees. If the world’s nations then protected these 9 million square kilometres of canopy over unused land, the new global forest could in theory soak up enough carbon to reduce atmospheric greenhouse gas by an estimated 25%.
That is, the extent of new tree canopy would be enough to take the main driver of global heating back to conditions on Earth a century ago.
And a second study, released in the same week, identifies 100 million hectares of degraded or destroyed tropical forest in 15 countries where restoration could start right now – and 87% of these hectares are in biodiversity hotspots that hold high concentrations of species found nowhere else.
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