English example sentences with "permafrost"

One fifth of the earth's surface is covered by permafrost.
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One-fifth of the Earth's surface is covered by permafrost.
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Permafrost covers one-fifth of the Earth's surface.
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The permafrost is thawing.
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In Alaska, thawing of permafrost is responsible for severe damage to roads, buildings, and pipelines that will be costly to replace, especially in remote parts of Alaska.
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The Intergovernmental Panel on Climate Change, which measures the impact of global warming, predicts snow cover, glaciers and permafrost will continue to decline in almost all regions throughout this century.
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The melting permafrost was key factor in the ecological disaster.
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In a statement, scientists from North-Eastern Federal University (NEFU) in Yakutsk say reindeer herders on Great Lyakhovsky island in the New Siberian Islands archipelago discovered the carcass in the melting permafrost.
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Recent years have seen major discoveries of mammoths, woolly rhinos, ice age foal, several puppies and cave lion cubs as the permafrost inside the Arctic Circle melts.
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Researchers have discovered that carbon-rich permafrost is thawing at increasingly high rates, likely as a result of human-induced climate change, making the Arctic an important potential source of methane emissions.
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The Permafrost Museum in the Russian city of Igarka is a unique local history complex that has no parallel in the world.
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Their ambition and dream is to bring the Siberian wooly mammoth, that became extinct six thousand years ago, back to life, using a piece of tissue that is kept in the underground permafrost.
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A new study says thawing permafrost, or soil that is usually frozen year-round, in the world's arctic regions is releasing greenhouse gases not accounted for in global estimates, making it more difficult to fight climate change.
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The scientists compared samples from the upper permafrost layer—which melts and refreezes seasonally—and the permanently frozen permafrost in which microbes have been trapped for millennia.
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According to a new study, the thawing Alaskan permafrost is releasing emissions of nitrous oxide at a rate about 12 times higher than thought. Along with being the third most significant greenhouse gas, nitrous oxide, once it combines with sunlight and oxygen in the stratosphere can convert to nitrogen oxides. This is something scientists say may harm the ozone layer.
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Mike Williams has spent much of his life on the Kuskokwim River in the western region of sub-arctic Alaska. He says rising temperatures during the last decade have been melting the permafrost layer of Earth, causing increased erosion. Bethel, Alaska and other towns have had to constantly reinforce their sea walls.
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