Global Warming

Massive restoration of world’s forests would cancel out a decade of CO2 emissions

Replenishing the world’s forests on a grand scale would suck enough carbon dioxide from the atmosphere to cancel out a decade of human emissions, according to an ambitious new study.

Scientists have established there is room for an additional 1.2 trillion trees to grow in parks, woods and abandoned land across the planet.

If such a goal were accomplished, ecologist Dr Thomas Crowther said it would outstrip every other method for tackling climate change – from building wind turbines to vegetarian diets.

Lack of accurate information meant for years experts severely underestimated the number of trees on Earth. Combining data from ground-based surveys and satellites, Dr Crowther and his colleagues arrived at a figure of three trillion – over seven times more than a previous Nasa estimate. Dr Crowther said undervaluing trees means scientists have also been massively underestimating the potential for forests to combat climate change.

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