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permafrost
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Taymyr Peninsula subarctic and Arctic regions
How global warming increases the likelihood of avalanches
methane blow thermokarst and melting permafrost pingo
For Students
permafrost summary
Quizzes
Iceland, Glacier lagoon (Jokulsarlon)
Winter Weather Words Quiz
Discover
New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
Why Is It Called Black Friday?
Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd
Causes of the Great Depression
Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.
Why Is the Mona Lisa So Famous?
Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution
The Rise of the Machines: Pros and Cons of the Industrial Revolution
Santa Claus flying in his sleigh, christmas, reindeer
Was Santa Claus a Real Person?
An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.
11 Egyptian Gods and Goddesses
Rural Irish landscape, Sligo, Ireland.
Why Is Ireland Two Countries?

permafrost: Media

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Videos

How global warming increases the likelihood of avalanches
Learn about researchers studying melting permafrost on mountains in order to predict...
Video: Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Mangroove/Dreamstime.com

Images

Taymyr Peninsula
Thawed surface of the permafrost on the tundra in summer, Taymyr Peninsula, Siberia.
© John Hartley/NHPA
subarctic and Arctic regions
Division of subarctic and Arctic regions showing distribution of permafrost and glaciers.
Encyclopædia Britannica, Inc.
methane blow
Methane blows result from the sudden release of methane gas that builds up in pockets...
Alexander Lutsenko/Alamy
thermokarst and melting permafrost
Thawing permafrost creates thermokarst topography, an uneven surface that contains...
© Boris Radosavljevic
pingo
Diagram explaining the formation of open-system and closed-system pingos.
Encyclopædia Britannica, Inc.
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