The scientific breakthrough, announced on this day in 1997, proved that geneticists could clone an adult mammal, giving rise to a new era of ethical debate and experimentation ...

Dolly’s claim to fame was that she was the very first mammal to be successfully cloned from a single adult sheep cell. Before this, scientists did not know cloning in this manner could result in ...

An Edinburgh firm – part of the institute that cloned Dolly the sheep – is to investigate if lab-grown food could be safe for ...