Spiegel: With its enormous population and booming industrial economy, India is set to become one of the planet’s chief polluters. India’s chief climate treaty negotiator, Shyam Saran, talks to SPIEGEL ONLINE his country’s role in reducing greenhouse gas emissions. SPIEGEL ONLINE: Mr. Saran, when will India oblige itself to start restricting its own CO2 emissions? Saran: Even though there is no legal obligation on India in this respect, the Prime Minister of India made a commitment that …