TOPSHOTS Gordon William carries a sack of traditional charcoal at a charcoal depot in Dar es Salaam on March 10, 2015. ARTI Energy is a Tanzanian company providing clean energy products, produces charcoal briquettes produced entirely from biomass waste and discarded char powder. Not only good for the environment, it provides an economic benefit to locals who bring in char powder. The finished product is cheaper, less smoky, and burns hotter and longer than traditional charcoal. While using biomass, such as coconut shells and corn husks, for charcoal is not a new idea, community acceptance of a new product is difficult to achieve, says ARTI Energy Executive Director Potnis Nachiket. AFP PHOTO / Daniel Hayduk