"Scientists have confirmed for the first time that at least one variety of Asian carp is living and breeding in the Great Lakes watershed, where it threatens stocks of native fish."

"Their lives are back in limbo because of the massive radioactive water leakage discovered at the tsunami-damaged nuclear plant."

"Under the watchful eyes of scientists, a little forage fish that lives off the southern coast of Maine developed a strangely large appetite."

"KUMAMOTO, Japan -- Japan, where residents of Minamata suffered lethal mercury poisoning in the mid-1950s, today became one of the first countries to sign a new international treaty to reduce mercury emissions and to phase out many products containing the toxic metal."

"HANOI -- Oil is spilling from a cargo vessel that ran aground on the reefs off Vietnam’s Ly Son island, roughly 730 kilometers (450 miles) south of the Vietnamese capital, Hanoi."

"Florida filed a lawsuit on Tuesday asking the U.S. Supreme Court to reduce neighboring Georgia's use of water from the Chattahoochee River that feeds the oyster beds and fish-spawning areas of Florida's Gulf Coast."

"Salmon counters at Bonneville Dam on the Columbia River are seeing the biggest chinook run since 1938, but environmentalists still worry."

"As he waits for crabs to take his bait, the Cambodian man explains his approach to eating seafood out of the Duwamish River. 'If it comes up black ... I throw it back,' he says. 'But if it looks normal, that means it just swam up from the Sound. It’s OK to eat.'"