Around 72 percent of New York City’s land is covered in an impervious layer of concrete, living up to its hype as the “concrete jungle” that Alicia Keys and Jay-Z sang about in “Empire State of Mind.” This city might be “where dreams are made,” but unfortunately a lot of sewage and pollution are made here, too. And thanks to all of these impermeable surfaces, heavy rains often wash untreated sewage and urban run-off into nearby rivers.
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Source: Phys.org