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Subtopic: Soil Structure and Formation

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Resource	Grade Level	Media Type
Changing Arctic Landscape In this video adapted from the Artic Athabaskan Council, learn how warmer temperatures in the Arctic are transforming the landscape, triggering a host of effects such as permafrost thawing and insect infestations.	6-12	QuickTime Video
Dating Lava Flows on Mauna Loa Volcano, Hawaiʻi In this video segment adapted from NOVA, scientists search for carbonized remains of plants preserved in lava flows to find out how long it has taken rain forests on Hawaiʻi to regenerate after a volcanic eruption.	3-12	QuickTime Video
Earth Water Filter In this video segment adapted from ZOOM, cast members try to make the most effective water filter. They experiment with filtering dirty, salty water through different combinations of sand, gravel, and a cotton bandana.	K-8	QuickTime Video
How Caves Form This interactive activity from NOVA Online shows four different ways in which caves are formed: by rainwater, waves, lava, and bacteria.	3-12	Flash Interactive
How Did Life Emerge Here? This video segment adapted from NOVA describes the emergence of life on the islands of Hawaiʻi from a barren volcanic platform under the ocean waves to the rich explosion of life that covers the many climate zones of the islands today.	3-12	QuickTime Video
Hurricanes: New Orleans Under Threat This video segment adapted from NOVA scienceNOW exposes how decades of development and geography combined to make the potential damage from a hurricane uniquely devastating in New Orleans, Louisiana.	6-12	QuickTime Video
Organic Farming: Conserving Top Soil Against the backdrop of the devastating 1930's Dust Bowl, this video segment adapted from Interactive NOVA profiles an organic farmer and the techniques he uses to conserve topsoil.	3-12	QuickTime Video
Soils Around the World Not all soils are the same. This interactive activity produced for Teachers' Domain features photographs of the 12 major soil types and maps that highlight their distribution around the world.	6-12	Flash Interactive
Water Conservation: Israel This video segment adapted from Last Oasis shows how Israel has attempted to meet the challenge of providing enough water for agricultural needs. Featured are two methods: recycled water and drip irrigation.	3-12	QuickTime Video