The Sexual Evolution

How 500 million years of sex, gender and mating shape modern relationships

By: Nathan H. Lents

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Paperback | 12 February 2026

At a Glance

Paperback
336 Pages

Dimensions(cm)
19.8 x 12.9 x 1.78

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'Marvellous fun' THE TIMES

'Glorious ' LUCY COOKE

'Colourful' GUARDIAN

At a time when people are testing the boundaries of just about everything related to sex and gender, The Sexual Evolution shows that diverse sexual behaviour is not a new development, or even a human one. It's the product of billions of years of experimentation throughout the animal kingdom.

Evolutionary biologist Nathan H. Lents takes readers on a journey from silent crickets to lesbian albatrosses to bonobos who kiss, revealing what this incredible array of sexual diversity can teach us. Amusing, enlightening and meticulously researched, this is a book that will demolish biases held by even the most open-minded among us.

About the Author

Nathan H. Lents is an American scientist, author and university professor. He has been on the faculty of John Jay College in New York since 2006, where he is currently the director of the Cell and Molecular Biology programme. He is the author of Not So Different and Human Errors.

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