Cow dung for the climate.

A model biogas project using gas generated from cattle dung in rural Nepal has lit around 140,000 kitchens, saving 400,000 tonnes of firewood, 800,000 litres of kerosene and preventing 600,000 tonnes of greenhouse gases from escaping into the atmosphere. The scheme recently won the renowned Ashden Award for Sustainable Energy and is already being replicated in some Asian and African countries.