Nigerian artist Konboye Ebipade Eugene has become a warrior in the fight against plastic pollution in his city of Abeokuta in Nigeria’s Ogun state, by creating mosaic portraits out of old flip-flops. Only a tiny fraction of waste is recycled in Nigeria, a country of some 210 million consumers. Each year, Nigeria throws 200,000 tonnes of plastic into the Atlantic Ocean, the UN Industrial Development Organisation reported last year.