...Given all the harm we know air pollution can cause, does cycling actually help, or could it hurt? After all, I’m not breathing in the foul fumes of a truck when I’m sitting inside an air-conditioned train. I’m certainly not breathing them in deeply, as I would while huffing and puffing on my cycle.
Air pollution kills more than 5 million people every year, yet there has been no analysis of the costs versus benefits of city cycling. Until now.
— Quartz
Long story short: keep biking. Researchers found that, in almost every city around the world, the health benefits of biking "far exceed" the damage than can be caused by breathing in dirty air. Even in the worst polluted cities in the world, you have to ride at least 60 minutes a day to be more harmed than helped.
For more on the dirty air polluting cities around the world, check out these links:
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