A Cloudy Day

A Cloudy Day

The sun illuminates nacreous clouds as it peeks above the horizon on August 20 near McMurdo Station, a day after the first sunrise since April 24. Nacreous clouds are rare, colorful clouds in the stratosphere that can form in the extreme cold of polar winter....
A Cloudy Day

A Cloudy Day

The sun illuminates nacreous clouds as it peeks above the horizon on August 20 near McMurdo Station, a day after the first sunrise since April 24. Nacreous clouds are rare, colorful clouds in the stratosphere that can form in the extreme cold of polar winter....
Spreading Out

Spreading Out

Antarctic sea ice extent in mid-August reached a record or near-record level high at 18.7 million square kilometers. The positive growth of total sea ice extent around Antarctica, which averages 18 million square kilometers at the height of winter, is part of a...
Unhinged

Unhinged

One of the enduring theories of how Antarctica initially entered a deep freeze about 34 million years ago has taken some knocks over the years, but a recent paper in the journal Geology may eventually blow the doors off the so-called gateway hypothesis....
Unhinged

Unhinged

One of the enduring theories of how Antarctica initially entered a deep freeze about 34 million years ago has taken some knocks over the years, but a recent paper in the journal Geology may eventually blow the doors off the so-called gateway hypothesis....
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