This article was published on Works That Work, No. 7, worksthatwork.com/7   Translation from Kinyarwanda: “The use of non-biodegradable plastic bags is forbidden”     Kimironko Market, a bustling open-air plaza at the edge of the Rwandan capital, is in many ways a typical African bazaar. Seven days a week, throngs of Kigali’s 1.3 million residents file through its narrow paths flanked by mangoes, bananas and avocados. Finely milled flour is piled in mounds, and slabs of goat and cow carcasses hang from metal hooks. The smells, satisfyingly pungent, reflect the freshness of the produce. At the front entrance, the air is heavy with the aroma of fish sourced from the waters of Africa’s Great Lakes region, but farther into the market the scent gra...