Although the crisis in Ukraine continues to focus attention on Russia’s western border, Moscow is seeking to exploit a more lucrative prize along its vast northern frontage: the Arctic Circle. Melting ice has opened up new transit routes and revealed previously inaccessible oil and mineral deposits. Facing a year of harsh economic constraints, securing exploitable […]
SAN FRANCISCO — At this annual gathering of more than 20,000 Earth and space scientists, press conferences offered by the organizers feature scientists discussing everything from Mars rovers whiffing methane to Christmas lights visible from space. One press conference that has for a few years had a recurring slot at the fall meeting of the […]
A new NOAA-led report shows that Arctic air temperatures continue to rise at more than twice the rate of global air temperatures, a phenomenon known as Arctic amplification. Increasing air and sea surface temperatures, declining reflectivity at the surface of the Greenland ice sheet, shrinking spring snow cover on land and summer ice on the […]
A long, long time ago, a hairy elephant stomped the northland, wrecking trees and shrubs as it swallowed twigs, leaves and bark. These mastodons left a few scattered teeth and bones in Alaska and the Yukon, reminders of an immense mammal that lived as far south as Honduras. A recent look at far-north mastodons shows […]