India, the world?s third biggest greenhouse gas emitter, has pledged to source 40% of its electricity from renewable and other low-carbon sources by 2030. It is the last major economy, following 140 other countries including China, the US and the EU, to submit a climate change plan to the UN before international talks to reach a deal on tackling global warming in Paris this December. Campaigners welcomed the commitment to cut the ?emissions intensity? of its economy ? a ratio of carbon emissions per unit of GDP ? by up to 35% by 2030. Read More?at ?www.theguardian.com