Pachauri's full resignation letter here.
Climate Depot's Morano statement on Pachauri's resignation: 'The IPCC is quietly popping champagne corks today. Pachauri gone can only be good news for the UN IPCC' - Marc Morano: 'If Pachauri had any decency, he would have resigned in the wake of the Climategate scandal which broke in 2009. Climategate implicated the upper echelon of UN IPCC scientists in attempting to collude and craft a narrative on global warming while allowing no dissent. Or Pachauri could have resigned when he wished skeptics would rub asbestos on their faces or conceded that the IPCC was at the 'beck and call' of governments. There were so many opportunities to to the right thing and fade away. But it took the proceedings of the Indian court system over the allegations of sexual harassment to finally bring Pachauri down. Things can only be looking up for the UN IPCC now that it has ridded itself of this political and ethical cancer.'
Many climate change activists are motivated by religious conviction. See:
Climate Depot round up of climate religion. Actor Harrison Ford's Green Religion: 'I needed something outside of myself to believe in and I found in nature a kind of God'
Flashback: Michael Crichton: 'One of the most powerful religions in the Western World is environmentalism. Environmentalism seems to be the religion of choice for urban atheists.'