"The Pacific bluefin tuna, fished relentlessly for decades, is in trouble."

"GENEVA -- Mercury pollution in the top layer of the world's oceans has doubled in the past century, part of a man-made problem that will require international cooperation to fix, the U.N.'s environment agency said Thursday."

"Risk experts are concerned that the twin threats of economic upheaval and accelerating climate change could collide over the next decade, delaying crucial adaptation efforts while exposing nations to unpredictable financial loss from disasters."

"A Japanese-led team of scientists has captured on film the world's first live images of a giant squid, journeying to the depths of the ocean in search of the mysterious creature thought to have inspired the myth of the 'kraken', a tentacled monster."

"Controversial environmental activist Paul Watson has stepped down as head of the Sea Shepherd Conservation Society after being named in a U.S. court order preventing him from approaching Japanese whaling fleets."

A French scientist has published a study indicating that plastic additives called phthalates, thought to be endocrine disruptors, are widely found in one species of ants -- presumeably because they have become widespread in the environment.

"NARAHA, Japan -- The decontamination crews at a deserted elementary school here are at the forefront of what Japan says is the most ambitious radiological cleanup the world has seen, one that promised to draw on cutting-edge technology from across the globe."

"It's been a banner year for solar energy. The United States is on track to install a record number of solar power systems -- thanks in large part to low-cost solar panels from China. That's been challenging for American manufacturers, and federal officials have put trade tariffs on Chinese panels."

"TOKYO — The newly elected prime minister of Japan, Shinzo Abe, said Sunday that he would seek to build nuclear reactors, reversing within a week in office a campaign pledge to move Japan away from nuclear power."

"If the United States ever enacts a major climate-change law, it will owe a debt to Arnold Schwarzenegger."