Kalyan Chatterjee interviews Dr Jayanta Bandyopadhyay, an internationally renowned professional on public interest research, mountain environment and water governance in south Asia. India receives an average of 120 centimetres of rainfall annually, according to the India Meteorological Department — a figure that

This they do by cutting down this invasive species, South American Mesquite, turning it into biochar and applying it to their fields to improve soil quality and secure a sustainable future for their land and livestock. Hitherto they had been producing charcoal