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Plate Tectonics: Lake Mead, Nevada
Earth's surface has changed in countless ways during the 4.6 billion years since it formed, and it continues to change today. This video segment looks at some of the geologic processes that have shaped the landscape...
What Happens When an Oil Spill Occurs?
Large oil spills are not a common occurrence. When a tanker runs aground or collides with another vessel and releases its cargo to the sea, it's often major news, especially if the spill is near land. The images in this...
Topographic maps that display three-dimensional landscapes on two-dimensional surfaces can offer a great deal of spatial information in minimal space. However, it is often difficult for people to interpret the features...
Lunar and Planetary Institute: Image Gallery
The Lunar and Planetary Institute (LPI) offers a variety of thematic slide sets. Each set is accompanied by a written description of the images, a glossary, and a list of suggested reading material. Each image features...
Antarctica: Sea Ice
This video segment, adapted from a NOVA broadcast, shows how sea ice forms in the Southern Ocean around Antarctica and how its seasonal fluctuation dramatically changes the continent. The segment, two minutes...
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