The period from 1645 - 1715 is generally regarded as the peak of the global cold spell that gripped earth from around 1250 to 1850, and it was the time of what's known as the Maunder Minimum, a 70 year period where very few sunspots were observed. Clearly, something different was going on with the sun during that time.
Is it possible that after 80 years of relative inactivity, the sun began a renewed period of activity in which coronal ejections slammed into earth's atmosphere causing little understood atmospheric reactions, possibly resulting in increased CO2 production? Could a change in solar neutrino flux have contributed to reactions that enhanced this CO2 production?
Whether this is the case or not, we must presume it is. We must act now, before it's too late. We can't take the risk by waiting any longer.
Surely a nation that has the technological prowess to send a man to the moon can come up with a Manhattan project like effort to re-engineer solar output to maximize the benefits of all peoples of earth.
This is a perfect project to assign to the United Nations. Charge them to come up with the plan to fix the sun. Coax algore out of retirement and put him in charge. Let him hire Tim Wirth and Steve Schneider to add credibility to the project.