Calcutta Telegraph: R.K. Pachauri, the director-general of Tata Energy Research Institute and the chief of Intergovernmental Panel of Climate Change, which won the Nobel peace prize last year, was in Calcutta recently. Jayanta Basu spoke to the climate crusader. Q: The Prime Minister recently announced the climate policy of India. How do you assess it? The policy has correctly given importance to greater use of renewable energy and increasing energy efficiency. It also talks of reviewing sectors …