Current Controversies in the Biological Sciences: Case Studies of Policy Challenges from New Technologies. Basic Bioethics. By Karen F. Greif and, Jon F. Merz. Cambridge (Massachusetts): MIT Press. $62.00 (hardcover); $25.00 (paper). xiii + 385 p.; index. 978‐0‐262‐07280‐9 (hc); 978‐0‐262‐57239‐2 (pb). 2007.