Unfortunately we don’t have anything to do with witches on broomsticks, how we work is far less magical. We all know the CO2 in the atmosphere has to go somewhere, so by planting trees we absorb the CO2 and turn it into oxygen, whilst also locking up carbon.
But we don’t just plop an acorn in the ground and cross our fingers. We choose various species to avoid growing just one type (an ecological no no!) and because trees are a fussy bunch, we grow them in the regions they like the most. This way our trees work hard for us, and keeping the workers happy insures they do a good job.