There are lots of things in cities that are unhealthy for both ourselves and others but we allow them. It's possible to make big improvements while still enjoyi

There are lots of things in cities that are unhealthy for both ourselves and others but we allow them. It's possible to make big improvements while still enjoying a certain amount of the benefit of something. For example - if you use the London Underground the air you breathe in is significantly worse than the air above ground in busy traffic. Significantly.