restoration of the earth’s forests may be the world’s most effective solution to climate change according to a new study published by the crowther lab of ETH zurich. the researchers — who investigate nature-based solutions to climate change — have mapped places around the world where new trees could grow and how much carbon they would store.
the researchers at ETH zurich calculated that under the current climate conditions, earth’s land could support 4.4 billion hectares of continuous tree cover. that would be 1.6 billion more than the currently existing 2.8 billion hectares. once these forests reach maturity, they could store 205 billion tonnes of carbon — about two thirds of the 300 billion tonnes of carbon that has been released in the atmosphere as a result of human activity since the industrial revolution.
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