Geologists mapped how metal pollutants have traveled across the city

Pittsburgh's steel industry may be largely in the past, but its legacy lives on in city soils. Geologists now show how historical coking and smelting dropped toxic metals in Pittsburgh's soil, particularly in the eastern half of the city. With samples from 56 parks, cemeteries and other sites around the city, the team was able to pinpoint some of those polluting factors.

from Latest Science News -- ScienceDaily https://ift.tt/LtBzjEX