MIT professor of meteorology Richard Lindzen (yes, they study climate, not meteors) in the WSJ today:
That is to say, the issue relevant to policy is far from settled. Nonetheless, the letter concludes: "Our academies will provide the scientific backdrop for the political and business leaders who must create effective policies to steer the world toward a low-carbon economy." In other words, the answer is settled even if the science is not.
But it is unwise to assume that those who have carved out agendas to exploit the issue will simply let go without a battle. One can only hope that the climate alarmists will lose so that we can go back to dealing with real science and real environmental problems such as assuring clean air and water. The latter should be an appropriate goal for Earth Day.