Mercury is a widespread environmental toxicant and pollutant that travels up the food chain onto people's dinner plates. Although a global issue, mercury regulations vary worldwide. Depending on where one lives in relation to mercury emissions, regional remediation makes minimal impacts for local fish consumption advisories. This is particularly true in a sensitive landscape like Michigan's Upper Peninsula, where nearly 80 percent of inland lakes are impaired.

Eastern cougars once roamed every U.S. state east of the Mississippi, but it has been eight decades since the last confirmed sighting of the animal. Now, the U.S. Fish and Wildlife Service has officially declared the subspecies extinct and removed it from the U.S. endangered species list.

Residential buildings in New York City that burn residual fuel oil were concentrated in Northern Manhattan and the Bronx, as of late 2015. Compared to cleaner heating sources such as natural gas, these dirty fuels produce high levels of particulate matter, exposure to which is linked to asthma, obesity, developmental delays, and other health problems.

Wildlife ecologists studying the rare Spotted owl in the forests of California have discovered that large, intense wildfires are not responsible for the breeding territory extinction that has been reported recently.

In the wake of China’s ban on the import of foreign garbage, which took effect earlier this month, countries across the globe are scrambling to figure out what to do with the thousands of tons of trash piling up at their ports. Now, Europe has announced it is launching an aggressive new recycling initiative to reduce plastic waste and garbage exports.

In a new commentary in the journal Nature Climate Change, IIASA researchers argue that a broader range of scenarios is needed to support international policymakers in the target of limiting climate change to under 2°C above pre-industrial levels, and to avoid potential negative environmental and social consequences of carbon dioxide removal on a massive scale. 

Streams and rivers across much of the U.S. are getting saltier and more alkaline due to an uptick in the use of road deicers and fertilizers in recent decades, according to a  50-year-long analysis of 232 monitoring sites by the U.S. Geological Survey.

The news sounds almost too good to be true.

Cultural evolution has made humans enormously potent ecosystem engineers and has enabled us to survive and flourish under a variety environmental conditions.

Naturally occurring algae on Greenland’s massive ice sheet absorb large amounts of the sun’s energy and speed up the melting of the ice sheet even more than black carbon and mineral dust, according to a new study.