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    permafrost

    US /ˈpɜ:rməfrɔ:st/

    ・

    UK /ˈpɜ:məfrɒst/

    C2
    n. (u.)Uncountable NounGround that is permanently frozen
    The Siberian Mountains present areas of permafrost

    Video subtitles

    Why Dying is Illegal in Longyearbyen, Norway

    04:40Why Dying is Illegal in Longyearbyen, Norway
    • In places as cold as Longyearbyen there is what's known as permafrost.

      In places as cold as Longyearbyen there is what's known as permafrost.

    • You see, "perma" means permit me to show you how to put this word into Google so you can find out that permafrost is where the ground stays below freezing permanently.

      You see, "perma" means permit me to show you how to put this word into Google so you can find out that permafrost is where the ground stays below freezing permanently.

    B1

    Relax With Olaf | Olaf's Deep Thoughts | Frozen

    01:10Relax With Olaf | Olaf's Deep Thoughts | Frozen
    • Enjoying your new permafrost, Olaf?

      Enjoying your new permafrost, Olaf?

    B1

    Permafrost Is Not What You Think It Is

    06:39Permafrost Is Not What You Think It Is
    • Okay, so you've probably heard of permafrost.

      Okay, so you've probably heard of permafrost.

    • Maybe it was a story of researchers finding a frozen baby mammoth in some permafrost.

      Maybe it was a story of researchers finding a frozen baby mammoth in some permafrost.

    B2

    How Many Mass Extinctions Have Happened On Earth?

    04:05How Many Mass Extinctions Have Happened On Earth?
    • High CO2 levels in the ocean, massive influxes of methane from sea beds and permafrost,

      High CO2 levels in the ocean, massive influxes of methane from sea beds and permafrost,

    B1

    President Obama Addresses Parliament

    56:48President Obama Addresses Parliament
    • Permafrost is thawing.

      Permafrost is thawing.

    B1

    Top 10 Signs That GLOBAL WARMING Is NO LONGER A Debate

    09:59Top 10 Signs That GLOBAL WARMING Is NO LONGER A Debate
    • Widespread thawing and melting of permafrost due to rising temperatures releases carbon, with some of that carbon being released as methane.

      Widespread thawing and melting of permafrost due to rising temperatures releases carbon, with some of that carbon being released as methane.

    • Widespread thawing and melting of permafrost due to rising temperatures releases carbon,

      Widespread thawing and melting of permafrost due to rising temperatures releases carbon,

    B2

    Ecosystem Change

    12:19Ecosystem Change
    • again one of our major themes, this would be in the permafrost. So as permafrost starts

      again one of our major themes, this would be in the permafrost. So as permafrost starts

    • to warm the permafrost. Which is going to create more methane gas. And so you know we

      to warm the permafrost. Which is going to create more methane gas. And so you know we

    B1

    Earth in 1000 Years

    31:13Earth in 1000 Years
    • Glaciers, sea ice, permafrost, ice sheets, and snow play an important role in Earth's climate.

      Glaciers, sea ice, permafrost, ice sheets, and snow play an important role in Earth's climate.

    • Glaciers, sea ice, permafrost, ice sheets and snow play an important role in Earth’s

      Glaciers, sea ice, permafrost, ice sheets and snow play an important role in Earth’s

    B1

    The Hydrologic and Carbon Cycles: Always Recycle! - Crash Course Ecology #8

    10:04The Hydrologic and Carbon Cycles: Always Recycle! - Crash Course Ecology #8
    • Alaska, cold places that also have plants, they contain huge carbon reserves that are trapped in permafrost, ground that's frozen year-round.

      Alaska, cold places that also have plants, they contain huge carbon reserves that are trapped in permafrost, ground that's frozen year-round.

    • But as permafrost melts, these dead plants decompose,

      But as permafrost melts, these dead plants decompose,

    B1

    What If All The Ice Melted On Earth? ft. Bill Nye

    05:51What If All The Ice Melted On Earth? ft. Bill Nye
    • On land frozen water forms glaciers, icesheets, permafrost and snow

      On land frozen water forms glaciers, icesheets, permafrost and snow

    B1