Scientists have applied for permission to create part-human, part-animal embryos as part of research to create new treatments for debilitating neurological diseases. Two teams of researchers today submitted applications to the Human Fertilisation and Embryology Authority for licences to be allowed to use therapeutic cloning to fuse human cells with rabbit, cow and goat egg. They want to create early-stage “chimeric” embryos that would be 99.9 per cent human and 0.1 per cent animal in order to produce stem cells – the body’s basic building blocks that can form different all other types of cells. The embryos would be destroyed...