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Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.
Permafrost temperatures with depth in a borehole in East Teshekpuk, Alaska (US) taken in 1989, 1995, and 2001 showing significant temperature increase in the upper 40 meters over time.
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USGS

Global Warming and Thawing Permafrost

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Last modified May 2, 2011 by Jennifer Bergman.

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The Fall 2009 issue of The Earth Scientist, which includes articles on student research into building design for earthquakes and a classroom lab on the composition of the Earthís ancient atmosphere, is available in our online store.

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Traveling Nitrogen Classroom Activity Kit

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Exploring the Poles

Polar exploration includes the exploration of the Arctic and the Antarctic. The Arctic is the area around the Earth's north pole. Antarctica is a continent that surrounds the South Pole. When you think...more

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The Arctic: Earth's North Polar Region

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Polar Bears on Thin Ice

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Sea Ice in the Arctic and Antarctic

Sea ice is frozen seawater. It floats on the oceans that are in Earth's polar regions. The salt in the seawater does not freeze. Very salty water gets trapped in the sea ice when it forms. The pockets...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA