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How the new world became old
How the idea of deep time transformed how Americans see their country and themselvesDuring the nineteenth century, Americans were shocked to learn that the land beneath their feet had once been stalked by terrifying beasts. T. rex and Brontosaurus ruled the continent. North America was home to sa...
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Rivers in rock
Both a visitors guide to the Elora Gorge on the Upper Grand River in southwestern Ontario and a thorough yet accessible introduction to its history, from the origins of its bedrock some 430 million years ago in prehistoric tropical seas, to contemporary natural and human processes affecting this...
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The nile revealed
The untold story of an iconic river, from its origins to its possible futures on a rapidly warming planetThe Nile River has captivated explorers and scientists for centuries, and its age and origins have been the subject of intense speculation since at least the days of Herodotus. The Nile Reveal...
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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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