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Melting ice means more of the Arctic is accessible to exploration and shipping, and countries are racing to establish a presence. But they still need heavy icebreakers, and the U.S. is falling behind.

The challenges include mild winter weather, high costs and residents who have lost their homes. But Russia says it will put on a great show when the 2014 Winter Olympics come to Sochi next February.

In the Canadian Arctic, food that's shipped in can be costly. People still hunt as their ancestors did — for seal, polar bear and narwhal.

After several years planning the difficult mission, scientists successfully drilled through Antarctica's Pine Island Glacier. They were stunned by what they found, and worry global sea levels could be at risk.

When it comes to fancy ice cream brands, Häagen-Dazs and Ben & Jerry's, each stay in their lanes. Is it just coincidence that one keeps things smooth and simple while the other is full of chunks?

When it comes to fancy ice cream brands, Häagen-Dazs and Ben & Jerry's, each stay in their lanes. Is it just coincidence that one keeps things smooth and simple while the other is full of chunks?

The Earth has already warmed more than 1 degree Celsius. New research suggests that above 1.5 degrees, massive ice melt, ocean current disruptions and coral die-offs are likely.

So much ice is melting at the Earth's poles that it's affecting the rotation of the planet, scientists say. Its spin is slowing down slightly, causing days to get longer.

The fierce winter storm is predicted to bring a foot of snow, or more, and catastrophic ice and freezing rain to a huge swath of the eastern U.S. We check in on Tulsa, Okla. and how residents there are doing.

At least 17 people are reported dead on the mountain after a massive quake-triggered avalanche swept through base camp on the south side on Saturday.