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When the sahara was green
The little-known history of how the Sahara was transformed from a green and fertile land into the largest hot desert in the worldThe Sahara is the largest hot desert in the world, equal in size to China or the United States. Yet, this arid expanse was once a verdant, pleasant land, fed by rivers ...
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When worlds quake
How earthquakes can reveal the subsurface secrets of our planet and other worldsWhen Worlds Quake is a fascinating account of how scientists around the globe seek to use quakes to answer tantalizing questions about the structure and inner dynamics of our planet and to discover the deepest secrets...
Read MoreRegular price $29.95Sale price $29.95 Regular price $29.95Unit price per
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