That's without mentioning the fact that trees emit chemicals into the air that h...

		nuc1e0n 7 months ago \| parent \| context \| favorite \| on: Heat stress mitigation by trees and shelters at bu... That's without mentioning the fact that trees emit chemicals into the air that help make it rain. It was discussed here on Hacker News recently. That will help to lower temperatures across a wide area.

And they're natural filters. It's a win/win/win.