Australian-based scientists said Thursday they had produced the world’s first kangaroo embryo through in vitro fertilization, hailing it as a key step towards saving marsupials that are endangered. Australian-based scientists said Thursday they had produced the world’s first kangaroo embryo through in vitro fertilization, hailing it as a key step towards saving marsupials that are endangered. Plants & Animals Veterinary medicine Phys.org – latest science and technology news stories