Looks like CO2 is both, a friend and a foe.
The so-called anthropogenic CO2 seems to be greening the planet’s surface by aiding photosynthesis, according to a new research that calls this effect as the ‘CO2 fertilization effect’. This is just a theory, mind you. Trees seem to be using more of CO2 and less of water. But it is no so rosy yet. There is a downside to this, researchers point out. The water that these trees taken in is spit out in the form of moisture which is then carried downwind to the farms. So if trees use less water, that could ultimately mean less rain for thirsty crops in at least some regions of the world.
Nature correct’s itself eventually, I believe.
(Image source: Stkarnick)