Abandoned hardrock mines and climate change cause metals and other elements to leach into streams. They also put rare earth elements into the water, a new study finds.
A handful of new studies analyze the depletion and contamination of groundwater, as well as the effects of climate change—and how communities are responding.
As floods increase in frequency and intensity, chemicals buried in river sediments become “ticking time bombs” waiting to activate.
Agriculture is a key contributor to the algae mats that plague Lake Erie. With so many fertilizers entering the lake, could sediment from the lake floor be used to grow crops instead?
Documents suggest that in more than 80 U.S. locations, the failure of an aging dam could flood a major toxic waste site.
Scientists report a cocktail of antibiotics, anti-inflammatory drugs, and personal care products found near two pilgrimage cities along the river.
Isotopic analysis indicates that mercury found in deep-sea organisms may have an origin in carrion from near the surface.
Harder to analyze and quantify, diffuse pollution is often overlooked when it comes to water quality assessments.
Levels of dissolved trace and heavy metals, which can be toxic, are highly variable across the river basin, concentrating in urban areas with high pollution but diluted by inflow from tributaries.
By using multiple remote sensors, scientists can quickly estimate the nature and thickness of oil spills—important factors for containment efforts.