Before we build Jurassic World...
June 8, 2015 4.08pm EDT
"The most common arguments against de-extinction hail from conservationists themselves. De-extinction is an expensive process and the concern is that the limited resources allocated to the conservation of living organisms may be diverted to pay for de-extinction research."
Facing extinction: one of the last remaining Northern White Rhinos.
Flickr/Don McCrady, CC BY-NC-ND