Drying dung used for fuel for the rural village, Wollo Province, Amhara Region, Ethiopia, Africa

Cattle dung pressed onto sticks to be sun dried and used as cooking fuel, Nalvara village, Assam, India, Asia

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Indian woman villagers drying cow dung for cooking fuel at Kutalpura Village in Rajasthan, Northern India

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Cow dung belonging to subsistence farmers in the Sunderbans, a low lying area of the Ganges Delta in Eastern India, that is very vulnerable to sea level rise. The cow dung is used as biofuel in traditional clay ovens.

Cow dung belonging to subsistence farmers in the Sunderbans, a low lying area of the Ganges Delta in Eastern India, that is very vulnerable to sea level rise. The cow dung is used as biofuel in traditional clay ovens.

Woman pressing cow dung to dry on the wall of a house, Shibpur district, Howrah, Kolkata, West Bengal, India, Asia

Cow dung belonging to subsistence farmers in the Sundarbans, a low lying area of the Ganges Delta in Eastern India, that is very vulnerable to sea level rise. The cow dung is used as biofuel in traditional clay ovens

Local senior man drying up excrement in front of the Alborz Mountain range, Alamut, Iran

Bangladesh, Rajshahi, Sticks of cow dung drying in the sun to be used as fuel.

Bangladesh, Rajshahi, Sticks of cow dung drying in the sun to be used as fuel.