I don't see where anyone has been muzzled. This scientist's opinion/theory is well known. Just because the agency he worked in has employees with different opinions from his is not necessarily muzzling. I think this guy is just frustrated and trying to get some attention thrown his way and the greenies are more than welcome to help his agenda.
As far as the science goes, severe hurricanes and warm ocean temperatures are not something new. Global warming / cooling is part of a natural cycle that is incompletely understood, but likely has its primary origin in the output of the sun. Numerous other factors mediate the overall effect.
"likely has its primary origin in the output of the sun. Numerous other factors mediate the overall effect"
That's like saying the source of keeping me alive is likely to be my breathing. The point is the anthropogenic rise in atmospheric carbon-dioxide. There is no dispute that CO2 has risen dramatically in the past 50 years. Burning fossil fuel releases CO2. Humans burn a lot of it. Why is this a poplitical issue?