overkill hypothesis

Book review – Life as We Made It: How 50,000 Years of Human Innovation Refined – and Redefined – Nature

7-minute read

Books can be like buses: nothing is written on a topic for ages and then two books appear in quick succession. The subtitle of Life as We Made It resembles that of the recently-reviewed Life Changing. Both books indeed cover the same topic: how humans have shaped the genetics and evolution of plants and animals around them. Despite some inevitable overlap, Beth Shapiro draws on two decades of her career as a geneticist to make Life as We Made It a beast all of its own. I found myself both thoroughly enjoying her fantastic science communication while disagreeing with her outlook.

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Book review – Ancient Bones: Unearthing the Astonishing New Story of How We Became Human

7-minute read

Where do humanity’s evolutionary roots lie? The answer has long been “in Africa”, but this idea is being challenged from various sides. I previously reviewed Begun’s The Real Planet of the Apes as a warming-up exercise before delving into this book. My conclusion was that its discussion of archaic ape evolution, although proposing that species moved back and forth between Africa and Eurasia, ultimately did not really challenge the Out of Africa hypothesis. Not so Ancient Bones. German palaeontologist Madeleine Böhme, With the help of two co-authors, journalists Rüdiger Braun and Florian Breier, firmly challenges the established narrative in an intriguing book that is as outspoken as it is readable.

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Book review – End of the Megafauna: The Fate of the World’s Hugest, Fiercest, and Strangest Animals

Mammoths and sabertooth cats are but two icons of an assemblage of large animals, or megafauna, that disappeared between roughly 50,000 to 12,000 years ago. As with all mass extinctions, several explanations have been put forward, but one man and his idea take centre stage in these discussions: Paul S. Martin’s overkill hypothesis. In End of the Megafauna, palaeomammalogist Ross D.E. MacPhee carefully scrutinises this idea, weighs up the arguments for and against, and explains its enduring allure. To quote Huxley, is this another example of “the slaying of a beautiful hypothesis by an ugly fact”?

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