sand

Book review – When the Sahara Was Green: How Our Greatest Desert Came to Be

7-minute read

When seeing the world through a deep-time lens, no landscape feature is permanent. The Sahara, for example, “only” came into existence some 7 million years ago. In that time, it has not always been the parched desert it is now but has been green and verdant numerous times, crisscrossed by rivers and home to hippos, turtles, fish and other animals and plants typical of wetter climes. In this book, retired earth scientist Martin Williams draws on a long lifetime of research and desert expeditions to give a very accessible introduction to the surprisingly complex geography of the Sahara, answering some very basic questions.

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Book review – The Story of the Earth in 25 Rocks: Tales of Important Geological Puzzles and the People Who Solved Them

Judging by the title of this book, you might expect it to talk of 25 remarkable kinds of rocks and minerals. But in the preface, geologist and palaeontologist Donald R. Prothero makes clear that his book looks as much at famous outcrops and geological phenomena. Bringing together 25 readable and short chapters, he gives a wide-ranging tour through the history of geology, celebrating the many researchers who contributed to this discipline.

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Book review – The World in a Grain: The Story of Sand and How It Transformed Civilization

Human civilisation is hungry for many resources, and I feel that there is a general awareness that we are taking more than the planet can provide. Deforestation, overfishing, fossil fuel exploitation – I’d like to think these are all familiar concepts. But who knew that we have a sand crisis looming in our near future? Journalist Vince Beiser has written a hard-hitting reportage that convinces that, despite its ubiquity, even humble grains of sand are a finite resource.

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