Rajendra Pachauri

Jonathan Maitland profiles Rajendra Pachauri, a key player in the climate change debate.

As the head of the UN's climate change panel, he is coming under increasing fire for a glaring error in the IPCC reporting on glaciers. Pachauri's critics also claim that his business interests - as a consultant to energy industry giants - could represent a conflict of interest. But his supporters say he's a tireless champion in alerting people to the impact of climate change on developing nations.