Of all the most polluting nations – US, China, Russia, Japan and the EU bloc – only India’s carbon emissions are rising: they rose almost 5% in 2016. No one questions India’s right to develop, or the fact that its current emissions per person are tiny. But when building the new India for its 1.3 billion people, whether it relies on coal and oil or clean, green energy will be a major factor in whether global warming can be tamed.