Recent studies show plant life in Alaska's northern forests is declining, while the tundra is seeing accelerated growth triggered by rising temperatures and concentrations of carbon dioxide.

A cascading decline in seal, sea lion and sea otter populations in the North Pacific may have been triggered by industrial whaling after World War II that forced packs of killer whales to look for new sources of food, a group of scientists suggest. "If our hypothesis is correct, either wholly or in significant part, commercial whaling in the North Pacific Ocean set off one of the largest and most complex ecological chain reactions ever described," the scientists wrote in an article appearing this week on the Proceedings of the National Academy of Sciences Web site.

One of the great success stories of the ocean, the return of the Pacific gray whale, may have been based on a miscalculation, scientists reported Monday in a study based on whale genetics.

WASHINGTON - By the end of this year, the world is projected to reach an unheralded but historic milestone: Half of the fish and shellfish we consume will be raised by humans, rather than caught in the wild.

GRANTS PASS, Ore. - A cascading decline in seal, sea lion and sea otter populations in the North Pacific may have been triggered by industrial whaling after World War II that forced killer whales to look for new sources of food, a group of scientists suggests.

Man arrested after two people stabbed, Montana's grizzly bear count tops 545 & Ocean temperatures linked to wildfires