Author Bill McKibben joins host Larry Mantle to discuss the dangers of genetic technologies--from genetic engineering to thinking machines to humans grown in a lab. McKibben, author of ENOUGH: Staying Human in an Engineered Age, posits that these scientific advances make us rethink just what it means to be ‰ÞÏhuman.‰Þð Should these technologies be limited and contained? How will they alter our relationship to the environment and to each other?