Hurt So Good
Iowa City were getting their granny panties all in a bunch, and the scientific community is united in that fact, about carbon dioxide (The Warmth?).
At that time we mentioned a benefit of increasing agricultural productivity.
The "fertilization effect" provided an 11% increase in foliage in the southwestern corner of North America, Australia's outback, the Middle East and some parts of Africa.
It's possible that CO2 is a reason Trees are re-invading grass lands.