"Cold fusion" has become an oft-used synonym for science gone wrong, but as A. K. Dewdney colorfully explains in Yes, We Have No Neutrons, that bad science has a long and (un)distinguished history. Predicating his discussion on Langmuir's "Laws of Bad Science," which describe common characteristics of dubious scientific claims, Dewdney recounts such classic scientific blunders as the "discovery" of N-rays by Rene Blondlot, psychoanalysis as practiced by Sigmund Freud, and even the ill-fated Biosphere 2 experiment. (Yes, cold fusion is there too.) Dewdney's book will sharpen the mental razor of anyone who hopes to separate legitimate claims from bunk.