"Philosophy, economics, and biology have rarely been so entertaining."—Matt Ridley, author of Genome Paul J. Zak's proclivity for taking blood samples has ear

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A provocative new account of how morality evolved What is morality? Where does it come from? And why do most of us heed its call most of the time? In Braintrust

Why are we obsessed with the things we want only to be bored when we get them? Why is addiction perfectly logical to an addict? Why does love change so quickly