The cloning of human embryos by South Korean researchers has reignited debate about how to regulate human cloning. No reputable scientist wants to make artificial babies. But, there is heated ...

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 ...

WASHINGTON (AP) – With angry words and apparent determination, three researchers told a meeting of scientists Tuesday they are unswayed by stories of medical risk or by ethical objections and will ...

With all the work to do, people to see, traffic jams to get stuck in, we all sometimes wish we could be in two places at once. We’ve already cloned sheep, cows, chickens, even monkeys. What if we ...

WASHINGTON -- Cloning humans, or any other primates, may be impossible with today's techniques because of a fundamental molecular obstacle, say scientists trying to understand why attempts to clone ...