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Eco-Maps
The relationship between pollution and the number of inhabitants has was gone hand in hand since the dawn of history: in his satires, Giovenale complained about smog and particulate matter that blighted Imperial Rome, which was the only ancient city to have more than 1 million inhabitants.
We have to wait until 1829 in Europe to beat this long-standing record: the super polluted London of the 19th century, with its coal-based economy topped the 1 million inhabitants mark, becoming the most famous symbol of a polluted metropolis.
Nowadays there are 414 cities with more than 1 million inhabitants: some of which are the most polluted and uninhabitable places in the world.
But there are also uncontaminated areas, rich in biodiversity, where a half of all animal and plant species in the world live. Protecting these virgin areas means not only saving thousands of living creatures but also saving the human race.
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