Planting almost a billion hectares of trees worldwide is the "biggest and cheapest tool" for tackling climate change, according to a new study. The researchers claimed that reforestation could remove 205 gigatons of carbon dioxide (CO2) from the atmosphere—equivalent to about 20 years' worth of the world's current emissions. This has been criticized as an exaggeration. It could actually be dangerous.
* This article was originally published here
