"NEW ORLEANS — The first-ever federal regulations for large-scale fish farming in the ocean were issued Monday, opening a new frontier in the harvesting of popular seafood species such as red drum, tuna and red snapper."

"The government of Nunavut said it will be meeting with the federal government later this month to begin discussions on marine protected areas in the territory."

"Two new, U.S.-based companies are changing the way we think about caviar – from wild, rare and unbearably expensive to sustainably farmed, available online and with more accessible prices."

"Blewett Pass, Washington -- Outdoorsmen emerge from their tents and truck beds in the early morning light. After a big breakfast they ready dry suits, diving masks, air hoses and a contraption that looks like a small pontoon boat."

"Wildlife advocates reached a tentative agreement with the U.S. government in a legal dispute over an endangered fish in the Yellowstone River along the Montana-North Dakota border."

"Eighty-five percent of male smallmouth bass tested in or nearby 19 National Wildlife Refuges in the U.S. Northeast had signs of female reproductive parts, according to a new federal study."

"Emission controls required on out-of-state power plants have yielded big reductions in mercury pollution in Western Maryland's air, a study has found. So far, however, the state's fish remain as contaminated with the toxic chemical as ever, researchers say."

"After decades of review and endless controversy, the Food and Drug Administration on Thursday approved the nation's first genetically altered animal -- a salmon genetically engineered to grow twice as fast as its natural counterpart."