No, he's not. Please read the article before spewing.
Hansen just thinks Algore-style indulgences it the wrong way to fix AGW. He wants $1/gal going to government (his paymaster) now, with that amount increasing in the future. In that directed payback, this dog Hansen is just bringing a bone to his master.
[Hansen] changed course when he realised that man-made emissions were choking the atmosphere on his own planet
"Conjectured" would be the correct verb. If he would prove it scientifically--beyond just a theory, then it would qualify as "realized."
For example, there's lots of volcanic spew and other accumulated gases in the atmosphere that could interfere with Hansen's looking into the heavenly product of his Ph.D. activities.
HF
I read the frickin article, and what I read appeared to me the man is bailing out.
You can buy his BS if you want to. I don’t.