4 in 10 North American Fish Species in Peril

A quarter contaminated beyond EPA safety limit

(AP) - Catch a fish in one of America's streams, and there's a good chance it will have at least trace amounts of mercury. The most comprehensive survey to date from the US Geological Survey tested more than 1,000 fish from nearly 300 streams around the nation—and found mercury in every single one of them. The good news? Only about a quarter had levels exceeding what the EPA says is safe for people eating average amounts of fish. More»

(NEWSER) - "A world of slime without human form": that was how Victor Hugo once described the Seine, the murky, polluted river that divides Paris in two. Yet recent efforts to clean up the river, from skimming the surface to pumping it with oxygen, have led to a resurgent fish population swimming through the French capital. You can even catch a salmon in the middle of town if you're lucky, though the Times of London says eating it might not be the best idea. More»

Scientists predict huge upheaval to marine populations

(NEWSER) - The world's supplies of fish face major upheaval, scientists warn, as climate change forces species from shrimp to herring away from warming waters toward the poles. The BBC reports that in 40 years, American fishermen may see a 50% reduction in the population of Atlantic cod. "The impact of climate change on marine biodiversity and fisheries is going to be huge," said the study's lead author. More»

Electrified reefs could help restore the population

(NEWSER) - Oysters can be shocked into repopulating and cleaning up America's waterways, the Christian Science Monitor reports. A project in New York's East River is using metal reefs, powered by solar panels, to build up limestone and help oysters grow. The upside is that they filter water—up to 50 gallons a day per oyster. More»

Depleted stocks throw ecosystems out of whack

(NEWSER) - Overfishing results in more than just the depletion of one species—it can mean the degradation of entire ecosystems. As the populations of large, predatory fish such as sharks and tuna decline, their prey flourishes, with sometimes-devastating results. The Christian Science Monitor looks at the problem of the world's increasingly depleted oceans. More»