Conjuring images of a dystopia, the shroud of bad air blanketing New Delhi in recent weeks has intensified global pressure on India to curb its greenhouse gas emissions.

India will arrive at the climate change summit in Paris next week as the third biggest generator of fossil fuel pollution blamed for warming the planet, after China and the U.S.

Half of India’s emissions come from burning coal. A visit to the coal-rich northeastern Indian state of Jharkhand reveals how this stands to get even worse.