The safety tests that the government says will no longer use animals by the end of this year include the practice of giving ...

Human head transplants are also known as cephalosomatic anastomosis, and at the moment, are not actually possible and likely won't be before 2030. Some researchers have tested a human head transplant ...

Compared with most animals, human babies are remarkably helpless. Yet this dependence is not a weakness; it is an ...