In spite of its universe of concrete and skyscraper, New York is the refuge of fauna and flora.
New York counts more than 350 species of birds, 170 of the fishes, 30 of the mammals, 32 of the reptiles 3 000 species of plants were listed in New York by the teams of the botanical garden of Brooklyn.

The main green space of Manhattan: Central Park
With its 341 hectares of greenery, it represents the vastest green space of Manhattan. The park contains several artificial lakes and plantations
The urban park welcomes 270 species of birds and 14 species of mammals (rabbits, marmots, squirrels, raccoons, migratory birds, silvery herons)

The atmospheric pollution is responsible for the development of respiratory diseases among the New Yorkers. The inhabitants of Manhattan are the most explained at the risk of developing a cancer because of the bad air quality, as well as The acid rains are a problem which we find in all the Northeast of the country.
The strong densities of population in New York represent at the same time an asset and a danger.

The reservoir of Ashokan.
The drinking water consumed by the New Yorkers depends on the pond paying mountains Catskill. This water is pure enough so that it requires no treatment in factories of purge. However, subterranean waters of New York must be handled with some chlorine, the fluoride, the phosphoric acid and sometimes with some hydroxide of sodium.
Waters of Hudson and New York Bay undergo important urban pollutions.