I'm generally against the idea of planting as many trees as possible.
Trees are not very good carbon sinks because they decompose and burn. Also, there are also some ecological communities where adding trees makes the land a worse carbon sink.
Avoiding cutting down forests to build suburbs is something I can certainly get behind though.
Do you have a link to the scientific paper(s) that this article references?
I'm a neuroscientist, and my microbiologist girlfriend and I always debate about the importance of microbes to neuroscience.