There are now more than 400 known dead zones in coastal waters worldwide, compared to 305 in the 1990s, according to study author Robert Diaz of the Virginia Institute of Marine Science.
Dead zones occur when excess nutrients—usually nitrogen and phosphorus—from agriculture or the burning of fossil fuels seep into the water system and fertilize blooms of algae along the coast.
As the microscopic plants die and sink to the ocean floor, they feed bacteria, which consume dissolved oxygen from surrounding waters. This limits oxygen availability for bottom-dwelling organisms and the fish that eat them.
Future global warming could lead to a significant increase in malaria cases in densely populated regions...
A new report says Europe’s fleet of nuclear power plants pose an increasing risk to millions...
While supporters and opponents of the Keystone XL pipeline have been busy debating the controversial proposal,...
The National Rifle Association (NRA) on Friday asked its 3.1 million members to call their representative...
