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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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Why trust science?
Why the social character of scientific knowledge makes it trustworthyAre doctors right when they tell us vaccines are safe? Should we take climate experts at their word when they warn us about the perils of global warming? Why should we trust science when so many of our political leaders don't? N...
Read MoreRegular price $18.95Sale price $18.95 Regular price $18.95Unit price per
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