While trekking through the Central Kalahari Game Reserve in Botswana one day, conservationist and wildlife photographer Dr.

The Arabian oryx is a medium-sized white-coated antelope with striking black marks and straight horns that can reach 3 feet in length. This animal is one of the world’s most desert-adapted mammals.

The technique, known as interspecies nuclear transfer, would for example, involve the cells of an Oryx being inserted into the womb of a goat for incubation. “We have many endangered animals in ...