5 surprising ways major cities are going green

Mar 29, 2019

Workers walk at a waste processing facility of Shandong Qiaobin Agriculture Technology on the outskirts of Jinan, Shandong province, China October 17, 2018. Picture taken October 17, 2018. REUTERS/Thomas Suen - RC1BDD653DD0

Eco-innovations involving cockroaches and cow dung have the potential to clean up urban life. Image: REUTERS/Thomas Suen

Douglas Broom

Senior Writer, Forum Agenda

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Bus attendants look for passengers during rush hour in Karachi, Pakistan May 22, 2017. REUTERS/Caren Firouz TPX IMAGES OF THE DAY - RC17E883C6A0

Karachi could soon have the world's first biomethane bus fleet. Image: REUTERS/Caren Firouz

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