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As the world searches for solutions to global climate change, tree planting has become increasingly popular, with ambitious campaigns aiming to plant billions or trillions of trees.
These projects often have other environmental goals, too, like regulating water cycles, halting soil erosion and restoring wildlife habitat. They also often have socioeconomic goals, like alleviating poverty.
But how effective is planting trees at accomplishing all this, and how strong is the evidence for this effectiveness? To find out, Mongabay engaged a team of researchers who conducted a non-exhaustive review of relevant scientific literature.