A trillion trees is not enough
How many trees are there on Earth? It sounds like an impossible question, but researchers at the Crowther Lab have come up with a number: 3.04 trillion – or roughly 422 trees per person. That may seem huge, but it is a far cry from what it used to be. Collecting data from over 400,000 forest plots worldwide, the Zurich-based ecological lab setup by British ecologist Tom Crowther estimated there are 46% fewer trees today than when human agriculture started 12,000 years ago, but humans could reset the dial and tackle the climate crisis through mass tree planting. According to Crowther’s report, planting one trillion trees globally could remove up to 200 billion tonnes of carbon over the next 50-100 years.