This sounds like perhaps the biggest geo-engineering project in history. Hope they have good science that it will work as hoped! This is not always obvious.

This sounds like perhaps the biggest geo-engineering project in history. Hope they have good science that it will work as hoped! This is not always obvious. For instance, in the US lot of people have been planting eastern red cedar trees in places like Nebraska, Kansas, Wyoming, and Colorado for shelterbelts and reforestation. But it seems the tree worsens drought conditions in natural grasslands by capturing available water. And it is vulnerable to fire, but with infrequent wildfires the trees grow large until uncontrollable fires break out. See e.g. http://www.fws.gov/mountain-prairie/pfw/r6pfw15.htm http://www.fws.gov/mountain-prairie/pfw/r6pfw15.htm