"Cities have become machines that kill people": the Dutch inventor fighting smog

Daan Roosegaarde, the artist and inventor behind smog-filtering towers and bikes, is on a mission to clean the air in the world’s most polluted citiesWhen Daan Roosegaarde wanted to pump Oxford Street air into a London museum to demonstrate the life-limiting effects of pollution, health and safety officers refused to give him permission. Related: Anti-smog bikes: could pedal power clean China's polluted air?Continue reading...