At least 75 of Alaska's brooks and streams have been turning a dirty orange likely due to thawing permafrost, with some rivers so impacted that the discoloration can be seen via satellite ...

Permafrost temperatures globally have been rising for half a century. On Alaska’s North Slope ... mud and moss and sitting in a waist-high lake surrounded by marsh. The water had been diverted ...

If you stab this frozen lake in the right ... which is causing the permafrost to thaw for the first time in thousands of years. Since the 1980s, permafrost in Alaska has warmed by one and a ...

Alyeska Pipeline consultant Mike Mertz provides a look at how the company is coping with thawing permafrost on the Trans-Alaska Pipeline. The Wall Street Journal's Jim Carlton reports.