Greenhouse gas 'feedback loop' discovered in freshwater lakes

A new study of chemical reactions that occur when organic matter decomposes in freshwater lakes has revealed that the debris from trees suppresses production of methane—while debris from plants found in reed beds actually ...

The fate of a lake after a dramatic mining disaster

On August 4, 2014, Mount Polley Mine in British Columbia, Canada, made international news when a dam failure released millions of cubic meters of tailings—hazardous by-products of mining operations—into the watershed. ...

Mercury contamination prevalent in western North America

Mercury contamination is widespread across western North America in the air, soil, lake sediments, plants, fish and wildlife, according to an international research team that included a University of Michigan biologist.

New record from stalagmites shows climate history in Central Asia

The climate in Central Asia, currently a semiarid region, has varied over the past 500,000 years. An accurate record of the past climate can help scientists understand current climate and better predict how the climate may ...

Microplastics in the Great Lakes: Becoming benthic

From the Great Pacific garbage patch to inland rivers, plastics are among the most widespread contaminants on Earth. Microplastics—particles of plastic smaller than five millimeters—are especially pervasive. As they build ...

NASA image: Sedimentary signs of a Martian lakebed

This evenly layered rock photographed by the Mast Camera (Mastcam) on NASA's Curiosity Mars Rover shows a pattern typical of a lake-floor sedimentary deposit not far from where flowing water entered a lake.

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