Planning Systems Services has invented the communal cooker, which turns rubbish into fuel to feed residents of one of Africa's biggest slums, Kibera, on the outskirts of Nairobi. Garbage is brought to the community cooker by volunteers who shovel it into one end of a giant concrete oven. At the other end are hotplates where the community cooks and boils water. This unique invention finds an alternative to dirty coal, as well as the disposal of waste. Says a member of the community: “It might smell a bit but it doesn’t make our food taste any different”.
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