Naturally occurring arsenic in private wells threatens people in many U.S. states and parts of Canada, according to a package of a dozen scientific papers to be published next week. The studies, focused mainly on New England but applicable elsewhere, say private wells present continuing risks due to almost nonexistent regulation in most states, homeowner inaction and inadequate mitigation measures. The reports also shed new light on the geologic mechanisms behind the contamination. The studies come amid new evidence that even low doses of arsenic may reduce IQ in children, in addition to well documented risks of heart disease, cancer and reduced lung function. The reports comprise a special section in the journal Science of the Total Environment.
Research News from 2015
January 30, 2015
January 28, 2015
Ice ages come and go. So do pulses of volcanic eruptions on land and at sea, maybe, on roughly the same time scale. Could the two be related? A recent two-week oceanographic expedition aimed to find out. The overarching hypothesis: As water accumulates on land in the form of massive ice sheets, the pressure of the overlying ice puts a lid on volcanoes. A corresponding drop in sea level allows volcanic vents on the seafloor to let loose. Then, when the planet warms, causing ice to melt and sea levels to rise, hydrothermal venting is suppressed, while volcanoes on land become more active.
January 20, 2015
Volcanoes can have multiple personalities, peaceful one minute, explosive the next. A geologist who has untangled these complicated states on land and at sea, improving our ability to see deadly eruptions coming, will receive the 2015 Vetlesen Prize. Stephen Sparks, a volcanologist at the University of Bristol, will be awarded a medal and $250,000 at a ceremony in New York in June.