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Articles on Sea ice

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A boat navigates at night next to large icebergs in eastern Greenland. (AP Photo/Felipe Dana)

Arctic Ocean: climate change is flooding the remote north with light – and new species

The Arctic has been a remote place for much of its history. But climate change is bringing global problems and opportunities to its door.
This Arctic heat wave has been unusually long-lived. The darkest reds on this map of the Arctic are areas that were more than 14 degrees Fahrenheit warmer in the spring of 2020 compared to the recent 15-year average. Joshua Stevens/NASA Earth Observatory

100 degrees in Siberia? 5 ways the extreme Arctic heat wave follows a disturbing pattern

The Arctic is warming about twice as fast as the planet as a whole, with serious consequences. Scientists have been warning about this for decades.
The new model predicts the growth of small ponds on arctic ice sheets. Scientific Visualization Studio / NASA

Video: How simple math can help predict the melting of sea ice

Understanding sea ice loss requires expensive and difficult expeditions. Scientists have developed a new model that predicts the growth of small ponds on sea ice more efficiently.
Over 100,000 narwhals swim the Earth’s Arctic waters. Kristin Laidre

Meet the narwhal, ‘unicorn of the sea’

The long tusk of the male narwhal earned these whales their fanciful nickname. But there’s more to these Arctic mammals than their unique spiral tooth.

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