melting sea ice
The oceans have heaved up and down as world temperatures have waxed and waned, but as new research tracking the past 2,800
Of course, upper limits are just that — they represent the highest levels of sea-level rise for which science currently says
Thirty years ago I led a campaign to save Antarctica. It was one of the best things I've ever done. It was enough for me to know that it was there, with its pristine beauty, incredible wildlife, and vast open expanses. I didn't need to see it to want to save it.
Sea ice melting partly because of human-caused climate change could open previously inaccessible Arctic Ocean waters to expanded
As they increasingly make Churchill their home in lieu of Arctic sea ice, town officials are working to keep these animals
Declining sea ice during the summer has spurred a dramatic increase in human activities in the Arctic, including marine shipping
The sea ice undergoes a seasonal cycle, spreading across the Arctic waters during winter and retreating in the warmth of
Melting, cracking, splitting and calving in Earth's cryosphere may be the most dramatic embodiments of the climatic change. Why should all this melting ice matter to us? Here are a few reasons.
Polar bears fasting on land lose about two pounds per day, and it's not clear how much longer it will be before the ice freezes and bears here can go back out onto the ice to hunt seals.
A new study suggests that the 2007 record for the lowest volume of Arctic sea ice in the summertime was broken last year
This footage from the USGS, via National Geographic, shows an astonishing aerial perspective of the walruses, crowded together