Developmental biologist Zhi-kun Li of the Chinese Academy of Sciences, first author of the new study, said it represents "a notable accomplishment in mammalian genetic engineering." He said the ...

Still, contemplation of these and other issues related to genetic engineering is important should the ability to create genetically enhanced humans ever arise.

Influential inventions often combine existing tools in new ways. The iPhone, for instance, amalgamated the telephone, web browser and camera, among many other devices. The same is now possible in ...