Mike is always going on about the terrible things that will happen if people don't stop wasting the earth's precious resources. Right now the destruction of forests is high on his hitlist. He fusses about the cutting down of trees to make paper that mostly ends up as junk mail, giftwrap, grocery store coupons, and political posters. He says it's better to plant trees than to destroy them, as their leaves take in huge amounts of a harmful greenhouse gas called carbon dioxide, while giving off life-sustaining oxygen for us to breath.
I'm with him a hundred percent on this. In fact, here is an even worse consequence of a tree shortage that he seems to have overlooked: