Gene-edited babies are now closer to becoming a reality. The ethical debate is far from settled

New research shows it’s possible to edit the DNA of human embryos with more precision. But scientists warn it’s still not ...

It's been 30 years since Dolly the sheep was born—where is cloning technology now?

When Dolly the sheep—the first cloned mammal—was born 30 years ago, she became one of the most famous animals in science ...