Abnormally high levels of mercury in Ordovician rocks may imply that a huge surge of volcanism took place at a time when much of the planet’s ocean life vanished.
mercury (Hg)
Posted inNews
Mercury in Rain Increasing in Western and Central United States
Despite tightening emissions rules, mercury concentrations are rising in rainfall wetting western and central regions of the United States. The pollutant may waft in from Asia, scientists speculate.
Posted inNews
Despite Stalled Regulations, U.S. Mercury Emissions Decline
Newly published measurements made downwind of West Virginia, Pennsylvania, and Ohio coal-burning plants reveal steep, unexpected drops in atmospheric mercury concentrations since 2006.
Posted inResearch Spotlights
Drought Changes How Peat Bogs Cycle Mercury and Sulfur
Drought conditions dictate whether atmospherically deposited sulfate stays locked in a peatland or is mobilized to stimulate the bacterial methylation of mercury.
Posted inResearch Spotlights
Humans Greatly Increase Mercury Levels in the Ocean
A study of the natural cycle of mercury reveals that humans are to blame for a five- to sixfold increase in the oceanic concentrations of the potentially toxic element.