I don’t understand those figures. If we’er at 400ppm and all plant life on earth dies at 150ppm then how did plant life thrive 10,000 years ago and especially why do I have to cut my lawn this weekend.
I must be missing something.
“I don’t understand those figures. If we’er at 400ppm and all plant life on earth dies at 150ppm then how did plant life thrive 10,000 years ago and especially why do I have to cut my lawn this weekend.”
It didn’t thrive, we were in a glaciation, and life barely made it.
You shouldn't. The taller your lawn grows the more CO2 it will use up. Don't trim your shrubs or trees either for the same reason and above all don't do any weeding. If your spousal unit or neighbors who believe in AGW complain, tell them you're doing this for them because you love them.