Scientists estimate that the dead zone could grow to around 7,829 square miles—or about the same size as the state of Massachusetts.

The "dead zone" has grown this year due to increased rainfall in America's Midwest washing ever greater amounts of nutrients into the Mississippi, which ultimately end up in the Gulf.

And the northern Gulf of Mexico dead zone is the second largest human-caused dead zone in the ocean," said Nancy Rabalais, the nation's foremost expert on dead zones.

The Gulf of Mexico 'dead zone' – a region of oxygen-depleted water that's harmful to sea life – will be the second-largest on record this summer.

Two Gulf of Mexico "dead zone" forecasts released Thursday could hardly be more staggeringly different. The wide range of the dead zone's size in the forecases is due to scientists' ...

The record-breaking dead zone this year is the result of unusually heavy rains in the Midwest, which flushed a lot of nutrients into the Gulf. The dead zone is invisible from the surface of the ocean.

The “dead zone” forms in the Gulf of Mexico every summer. It’s caused by nutrients such as nitrogen and phosphorus, largely from farm fertilizer and municipal runoff, which are carried down ...

Did you know there's a massive "dead zone" in the Gulf of Mexico? No, we're not talking about the 1983 sci-fi horror film, or the early 2000s sci-fi TV series. This one is very much real.

A 'dead zone' off the Gulf coast is larger than NOAA predicted. The massive area poses danger to marine life, and recovery could take decades.

NEW ORLEANS -- Scientists say this year that the "dead zone" area that forms every summer in the Gulf of Mexico is one of the largest ever measured.

A 'dead zone' off the Gulf coast is larger than NOAA predicted. The massive area poses danger to marine life, and recovery could take decades.