Innumerable articles and several books have been written about the HeLa cell line before, but they largely ignored Henrietta and her family. The true strength of Skloot’s book is that it is not a simple celebration of science. Her cells have affected the lives of people all over the world, and this makes it all the more shameful that, until now, almost no one knew anything about her. Because of a biological quirk scientists were able to turn her cells into the first “immortal” cell line, called HeLa, the study of which has greatly increased our knowledge of ourselves and led to the effective treatment of numerous diseases. This woman was Henrietta Lacks, and even though she died from the cancer in October of 1951 the descendants of the cells taken from her over a half century ago are still thriving in laboratories around the world. She had no idea that the sample of her cells had been taken, but this small event of one woman’s life would end up changing the world in ways that no one expected. In February of 1951 doctors at Johns Hopkins Hospital removed cancerous cells from the cervix of a 30 year old African American woman who had come in complaining of a painful “knot” inside of her. Though it has nothing at all to do with fossils or evolution, Rebecca Skloot’s The Immortal Life of Henrietta Lacks is also a tale of contingency. What would life look like today if the ancestors of the first land-dwelling vertebrates had two legs instead of four? How would non-avian dinosaurs continue to have evolved if they had not been wiped out 65 million years ago? What if, like many other prehistoric apes, our own ancestors fell into extinction during the Pliocene? Any one of these events would have changed the history of life on earth, and even though there are not answers to these questions they still remind me of how historical quirks can have major effects. Contingency has been on my mind quite often these days.
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