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In the atmospheric layer above it, about 10 to 30 miles up, is the stratospheric polar vortex, where every winter a sunlight-starved Arctic spins up a mass of cold air that, ultimately, dissipates ...
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Yonhap News Agency on MSNHanwha Ocean to build next-gen icebreaking research vessel for polar missionsHanwha Ocean Co. said Tuesday it has been selected as the preferred bidder to construct South Korea's next-generation ...
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