Mercury levels in rainfall are rising in parts of North America, study finds
Wednesday, January 27, 2016 - 10:25
in Earth & Climate
An analysis of long-term trends in the amount of mercury in rainfall and other forms of precipitation in North America found recent increases at many sites, mostly in the center of the continent. At other sites, including those along the East Coast, mercury levels in rainfall have been trending steadily downward over the past 20 years.