Applying nitrogen fertilizer to corn at the W.K. Kellogg Biological Station, a research site in Michigan.
Fertilizer is a key source of nitrogen pollution which fouls air and water worldwide. Current regulations target farmers, but focusing on producers could spur them to develop greener products.
Hull Peninsula and part of the Boston Harbor Islands National Recreation Area.
A few decades ago Boston Harbor was one of the nation's dirtiest water bodies. Now, healthier fish in the harbor underscore that a multibillion-dollar cleanup has succeeded.
A water bridge over the Klip River in Gauteng, South Africa.
Harmful pesticides have been found in the widely consumed sharptooth catfish found in a river that runs through Johannesburg.
Volunteers prepare to take flow measurements on Muddy Creek.
Centre County Pennsylvania Senior Environmental Corps
When people form local networks to take care of resources such as drinking water, they strengthen their communities. Technology can support these efforts and promote learning and innovation.
Surface water from the Vaal River is highly polluted with fragments of microplastics.
South Africa needs to strengthen its response to plastic pollution.
The Vaal River in Gauteng, South Africa’s richest province, is polluted.
South Africa's local governments lack a clear separation of legislative and executive powers.
Debris pulled from a Lake Erie marina during a cleanup, June 9, 2012.
NOAA Office of Response and Restoration
Roughly 10,000 tons of plastic enter the Great Lakes every year, and scientists want to know where it ends up. There are some parallels to ocean plastics, but also important differences.
Algae cover the surface of the Caloosahatchee River at the W.P. Franklin Lock and Dam, July 12, 2018, in Alva, Florida.
AP Photo/Lynne Sladky
Red tide and a blue-green algae outbreak are fouling hundreds of miles of coast, killing fish and driving tourists away from beaches. Some of the causes are natural, but human actions play a big role.
Taj Mahal is one of the most beautiful buildings in the world, but over the last four centuries it has aged and darkened from pollution.
Drugs are finding their way into lakes and rivers, and we need to know exactly what they're doing to wildlife.
The results of phytoremediation are remarkable.
Sea turtle eating a plastic bag.
Plastic bags are commonly mistaken for food by sea animals. They require a lot of energy and resources to be made, and have caused floods in some countries.
In Delhi, middle class residents and informal recyclers joined together to oppose the privatisation of waste management.
The Environmental Justice Atlas highlights the most pertinent findings of environmental conflicts facing the world today.
intararit / shutterstock
How to cut down on toxic chemicals found in common household products.
Blooms of algae, like this growth in 2015 in Lake St. Clair between Michigan and Ontario, promote the formation of dead zones.
NASA Earth Observatory
Scientists have mapped a huge dead zone in the Gulf of Oman, without enough oxygen in the water to support life. This Speed Read explains why dead zones form in waters around the world.
Toppled road sign for a closed water distribution center in Flint, Mich.
Michigan officials have ended distribution of free bottled water in Flint, but many residents believe the city's water crisis is not over and have lost all trust in government.
Long-eared Myotis bat (
Myotis septentrionalis), photographed in Arizona.
Scientists often use animals and plants as indicators to assess whether ecosystems are polluted. Tracking bats, which cover wide areas and need clean water, could become a way to find potable water.
Little Missouri River, North Dakota.
Recent research shows that US rivers are becoming saltier and more alkaline. Salt pollution threatens drinking water supplies and freshwater ecosystems, but there is no broad system for regulating it.
There are nanometals in your washing machine.
Many socks, towels and other textiles are treated with silver nanoparticles to kill germs and odors. When the silver washes out, it can pollute waterways. Two chemists propose a way to collect it from wastewater.
Healthy aquatic vegetation in the Chesapeake Bay.
Cassie Gurbisz/University of Maryland Center for Environmental Science
An ambitious plan to cut the flow of nutrients into the Chesapeake Bay has produced historic regrowth of underwater seagrasses. These results offer hope for other polluted water bodies.