Scientists have created embryos from the eggs of southern white rhino and sperm from their northern counterparts.
Rhino resurrection is tempting, but if humans cannot save a species in nature, what future for animals that we manufacture?
Congress is considering proposals to amend the Endangered Species Act. In this roundup we offer views on what's lost when species disappear and the complexities of bringing them back from the brink.
It's difficult to sort out the conservation 'wheat' from the 'chaff' when too many subspecies are defined.
Why do so many people take safety risks or abuse wild animals for the sake of a photo with them? In one researcher's view, scientists may encourage this trend by sharing their own wildlife selfies.
Speedy movement to newly warm areas isn't everything, says new study.