Scientists in Oregon have achieved something that many thought might be impossible. They said Wednesday that they have cloned human embryos and then harvested the embryo's stem cells. The discovery, ...

The idea of human cloning was science fiction when it was first imagined. But in the last few decades, technological and scientific advances have made this a real possibility. Although the ethics of ...

Over decades of covering the incredible advances being made in biology, I’ve seen how some ideas become fashionable, get intense media coverage for a few years, and then fade from public view again.

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

After operating in secrecy for years, a startup company called R3 Bio, in Richmond, California, suddenly shared details about its work last week—saying it had raised money to create nonsentient monkey ...

Human reproductive cloning is currently the subject of much debate around the world, involving a variety of ethical, religious, societal, scientific, and medical issues. This report from the National ...