AP Photo

Prime Minister Manmohan Singh expressed support for the United Nations' Intergovernmental Panel on Climate Change and its leader, Rajendra Pachauri, at a local energy conference in New Delhi Friday. The move has surprised many observers, but it may prove to be politically astute.

The IPCC's credibility is in tatters. From climategate to glaciergate, Amazongate, natural-disaster gate, and now Chinagate, the revelations of bad science keep coming. Given all that, plus the much-publicized flap between Environment Minister Jairam Ramesh and Mr. Pachauri over the science behind "melting" Himalayan glaciers weeks before the Copenhagen climate summit in December, superficially one might have expected the Indian government to jettison Mr. Pachauri as soon as...