Why urban density is good for health – even during a pandemic

Disease outbreaks shape our cities. Public health concerns have influenced some of the most iconic developments in urban planning. London's sewage systems were developed in response to cholera outbreaks in the 19th century. In the U.S. at the turn of the 20th century, public parks became a popular (though possibly ineffective) way of offering citizens cleaner air to protect them from diseases such as tuberculosis. Now, COVID-19 may have an impact on urban spaces, too.

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