Culture
A Map That Reveals How Polluted London's Parks Really Are
Short answer: very.
For people who love parks but worry about air pollution, there’s good and bad news from London.
The good news is that, as of Wednesday morning, London has a new online map and search engine that enables you to discover exactly how polluted your local park is. The bad news is that the answers it provides are so unpromising that after consulting it you might be tempted to stay indoors, breathing through an oxygen mask.