It is well established that all human beings today, wherever they live, belong to one single species. Yet even many people who claim to abhor racism take for granted that human “races” have a biological reality. From pharmacological researchers to the U.S. government, the dubious tradition of classifying people by race lives on. In Troublesome Science, Rob DeSalle and Ian Tattersall provide a lucid and compelling presentation of how the tools of modern biological science have been misused to sustain the belief in the biological basis of racial classification.

Troublesome Science argues that taxonomy, the scientific classification of organisms, provides a cure for such misbegotten mischaracterizations. DeSalle and Tattersall explain how taxonomists do their job, in particular the genomic and morphological techniques they use to identify a species and to understand and organize the relationships among different species and the variants within them. They detail the use of genetic data to trace human origins and look at how scientists have attempted to recognize discrete populations within Homo sapiens. DeSalle and Tattersall demonstrate conclusively that these techniques, when applied correctly to the study of human variety, fail to find genuine differences, striking a blow against pseudoscientific chicanery. While the diversity that exists within our species is a real phenomenon, it nevertheless defeats any systematic attempt to recognize discrete units within it. The stark lines that humans insist on drawing between their own groups and others are nothing but a mixture of imagination and ideology. Troublesome Science is an important call for researchers, journalists, and citizens to cast aside the belief that race has a biological meaning, for the sake of social justice and sound science alike.

Rob DeSalle is a curator in the Sackler Institute for Comparative Genomics and professor at the Richard Gilder Graduate School at the American Museum of Natural History. He is the author of The Science of Jurassic Park and the Lost World: Or How to Build a Dinosaur (1997) and the coauthor of Welcome to the Microbiome: Getting to Know the Trillions of Bacteria and Other Microbes In, On, and Around You (2015), among others.

Ian Tattersall is curator emeritus in the Division of Anthropology at the American Museum of Natural History. His many books include Masters of the Planet: The Search for Our Human Origins (2012) and The Strange Case of the Rickety Cossack and Other Cautionary Tales from Human Evolution (2015).