Dr Jen Dickie and her PhD student Natalie Boyd Williams travelled to Nepal in August to interview users of domestic toilet-linked anaerobic digesters. It is estimated that 2.5 billion people, mostly in Asia, use traditional biomass fuels such as wood, animal dung (dung cakes) and crop residue. Each year, close to 4 million people die prematurely from illness attributable to household air pollution from inefficient cooking practices…
