Researchers in Canada are reporting for the first time that high mercury levels in certain Arctic seals appear to be linked to vanishing sea ice caused by global warming
Young whale pokes its melon-shaped head into the cool morning air near this remote island, a sign its herd is thriving despite mounting threats in Russia's melting Arctic
An already relentless melting of the Arctic greatly accelerated this summer-a sign that some scientists worry could mean global warming has passed an ominous tipping point.
One scientist even...
Warmer waters in the deep Pacific triggered the end of the last ice age, preceding the rise in greenhouse gas levels.Earth's climate can be sensitive, changing after a variety of events. A volcanic...
