offspring. until we know better how to meet the physical and psychological needs of elephants in captivity, to my mind mammoth de-extinction at least along this particular route is a no-go. you call this de-extinction. you re talking aboutin excontinuityex unextincting a species. what would you do along these lines? one would have to think carefully. the community of people who is thinking about de-extinction brought up several different species that are candidates, a passenger pigeon, went extinct in north america about 100 years ago, this bird is a candidate to be resurrected using this technology. species like the file seen that went extinct in australia as a consequence of a massive predator eradication program founded on principles we know now probably aren t true. these animals probably weren t predators. if we could bring them back and repopulate them, they might be welcome in the society. what s the point of this? to be very honest and blunt. you talk in the book about ec