27 March 2019 (UN Environment)* — Air pollution isn’t a new problem. We’ve been worried about smog for centuries, from the infamous “pea souper” smogs of 19th century London to the hazes that regularly engulf cities from Beijing to Delhi in the present day. What is new, however, is the awareness of exactly how bad it is for our health.

Photo from UN Environment.
According to the World Health Organization (WHO), air pollution-related diseases claim seven million lives each year. But bad air doesn’t just kill.



