Carl Zimmer (born 1966) is a popular science writer and blogger, especially regarding the study of evolution and parasites. He has written several books and contributes science essays to publications such as The New York Times and Discover. He is a Fellow at Yale University's Morse College. He lives in Guilford, Connecticut, with his wife, Grace Farrell Zimmer, and their two children. His father, Dick Zimmer, was a Republican congressman from New Jersey from 1991 through 1997. His brother, Benjamin Zimmer, is a linguist.

When most readers hear the words E. coli, they think tainted hamburger or toxic spinach. Noted science writer Zimmer says there are in fact many different strains of E. coli, some coexisting quite happily with us in our digestive tracts. These rod-shaped bacteria were among the first organisms to have their genome mapped, and today they are the toolbox of the genetic engineering industry and even of high school scientists. Zimmer (Evolution: The Triumph of an Idea) explains that by scrutinizing the bacteria's genome, scientists have discovered that genes can jump from one species to another and how virus DNA has become tightly intertwined with the genes of living creatures all the way up the tree of life to humans. Studying starving E. coli has taught us about how our own cells age. Advocates of intelligent design often produce the E. coli flagellum as Exhibit A, but the author shows how new research has shed light on the possible evolutionary arc of the flagellum. Zimmer devotes a chapter to the ethical debates surrounding genetic engineering. Written in elegant, even poetic prose, Zimmer's well-crafted exploration should be required reading for all well-educated readers. (May 6)

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