Good things don't come in threes for Antarctic sea ice

As this month marks the third consecutive summer with extremely low sea-ice cover around Antarctica, new statistical research points to fundamental changes taking place in the polar Southern Ocean.

Video: The latest science on tipping points in Antarctica

Ice loss from Antarctica has increased over the recent decades. The ice sheet in this remote continent covers about 98% of the Antarctic continent and is the largest single mass of ice on Earth. Even small changes in ocean ...

What does an iceless Lake Superior portend?

From Duluth, Lake Superior is a colossal expanse of blue this week with no otherworldly ice shards smashed against the shore or colorful fish houses decorating stretches of white.

DNA reveals that unique microorganisms evolved at poles

Communities of microorganisms at the bottom of polar lakes evolved independently from other regions, influenced by the particular geological, biological, and climate history of their regions. The unique character of the microbial ...

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