LONDON, April 10 (Reuters Breakingviews) - Helping India grow in a green way is one of the best things that could happen for its people and the planet. Emissions from the world’s most populous country are only 7% of greenhouse gases but are growing fast while those produced by rich countries have largely peaked. If India avoids the dirty path to development that others including China have taken, everyone will have a better chance of avoiding climate hell. India would have a lot to gain too. A step-up of investment in low-carbon development could provide good jobs, cut air pollution...