Inputs of mercury (Hg) and dissolved organic carbon (DOC) in throughfall and stemflow waters were measured for an upland/bog watershed in northern Minnesota, and were compared to the deposition in a nearby opening to determine the influence of tree canopies on Hg and DOC deposition. Twice as much Hg and seven times as much DOC was deposited in the forested watershed compared to the opening. Mas...

Mercury is a metal found in elemental, organic, and inorganic forms in the nature. This substance is present in the composition of earth crust, soil, air, and even in some tissues of plants and sea animals. Each year nearly 3400 tons of mercury compounds are released in the environment, which 95% settle in the soil, 3% in the oceans, and 2% in the atmosphere. Different industrial products li...

identify, in the general population, any human health detriments arising from the placement of dental amalgam restorations, and all concluded that amalgam was a safe and effective restorative material. This article reviews more recent studies on the safety of dental amalgams, with an emphasis on those that have been published since the 1993 report by the PHS Committee to Coordinate Environmenta...