The Exxon Valdez catastrophe on March 24, 1989, no longer holds the distinction of being the largest oil spill ever in U.S. waters. In sheer size, it was eclipsed last April by the disastrous well blowout in the Gulf of Mexico. But as the Pew Environment Group's video, "Lingering Oil," shows, the lessons of the Exxon Valdez spill are more vital than ever as we approach the first anniversary of the Deepwater Horizon explosion and contemplate drilling in the even more challenging Arctic Ocean.
For polar explorer Ann Daniels, the worst part of this year's expedition to the Arctic won't be enduring bitterly cold temperatures or pulling a 100-kilogram (220-pound) sledge over steep jagged ridges.
A 19-square-mile ice shelf in Canada's northern Arctic has broken away from Ellesmere Island, surprising scientists who say the floating ice shelf is another dramatic indication of how warmer temperatures are changing the polar frontier
It's 25 below outside, and the heat in the van is busted. Randy Boyer, a burly ConocoPhillips contractor in thermal coveralls, navigates the slick ice road. "This is nothing," he says, keeping his eye on the thin red line running down the center of the road. "The other week we had a whiteout, and I was stuck in my truck for 36 hours." Right now we're some 250 miles north of the Arctic Circle, and it's so white outside that the distant horizon appears to blend seamlessly into the blustery sky.
Ice cover in the Arctic Ocean, long held to be an early warning of a changing climate, has shattered the all-time low record this summer, according to scientists from the National Snow and Ice Data Center in Boulder.
Scientists say Russia could lay claim to millions of square kilometers of territory under the Arctic Ocean, following their discovery of a link between a major underwater ridge and Russia's coastal shelf, Russian media reports.