It would help...if humans were actually CAUSING global "warming", with increased carbon emissions and other ozone depleting sunbstances they arent, its a natural cycle, all the planets are warming/cooling not just Earth, it has to do with the earths declining magnetic field and a special 2012 precession of the equinoxes, but the government doesnt like to tell complete truths, just half truths. There is nothing we can do about global "warming", it should be called global change, because warming is misleading in that we are at the end of a VERY LARGE warming cycle, so we are entering a new large cooling cycle, this cant be stopped, its at the end of its cycle, it needs to start over, its like trying to change time, not possible. So your tree idea would help to slow down some of the negative impacts, like a large decrease in life population, but at the most we would only help to clean up our current pollution, you cant reverse it until you stop polluting from anything, zero pollution. Good idea, but the elites know that there is no climate change fix, only something to slow it down, a smoother transition.