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Plate Tectonics: Secrets of the Deep
Viewed from space, one of the remarkable features of our planet is that it has continents and oceans. The changing pattern of the continents and oceans is a very important characteristic of the earth, and the discovery of how this movement occurs is ...(more details) |
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$149.95 |
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$149.95 |
| DVD + 3-Year Streaming |
$224.93 |
| 3-Year Streaming |
$149.95 |
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Flood Control
The lowland basis around Los Angeles contains the most extensive water conservation and flood control system in the world. In 1917, work began on a system of dams and improved channels to control the floodwaters entering the basin. This program looks...(more details) |
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$19.95 |
| DVD |
$19.95 |
| DVD + 3-Year Streaming |
$29.93 |
| 3-Year Streaming |
$19.95 |
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The Puzzle of the Continents
Curiously, although plate tectonics is very good at describing what happens to the sea floor and the changing distribution of the continents, it is of little help in describing what happens when the continents themselves deform. They behave in a comp...(more details) |
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Waterworld
Water is an essential ingredient of the earth, and without it we would not be here. Water reshapes our planet's surface through erosion and chemical weathering; the position of the shoreline is one of the most changeable of all geological features. A...(more details) |
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Volcanoes: Melting the Earth
Volcanoes are among the most dramatic features of the earth, and a sure sign that the planet is alive. But what we see on land is only a small part of the story. In the middle of the oceans about 5 cubic miles of liquid rock is added to the sea floor...(more details) |
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