Dr. John Pippin, a senior medical and research adviser with the Physicians Committee for Responsible Medicine, says that the timeworn practice of formaldehyde-soaked animals dissected by middle- and high school students fails to teach important biology lessons in areas including anatomy, habitat and physiology. "The shift away from using killed and preserved animals is so profound, classroom dissections are inevitably going to end," Pippin said. "The quality of the students' experience using virtual dissections is far superior, and the one-time cost for the software makes it economical for schools."