Simon Cowell is trying to get everyone to clone their dogs, and we've had our dogs 'done' so they can't have puppies any more. Cloning is like modern day reproducing - reproducing the bits you want.

Humans are something very different from animals, and the numbers required to get cloning to work in animals are completely prohibitory with humans.

In early January I introduced my legislation, which, besides prohibiting Federal funding of human cloning, also expresses the sense of Congress that foreign nations should establish total prohibition on human cloning as well.

I think we can allow the therapeutic uses of nuclear transplant technology, which we call cloning, without running the danger of actually having live human beings born.

The argument has been made in Congress that it is slippery slope if you allow therapeutic, what people people are calling therapeutic cloning, then you will get reproductive cloning.

I'm trying to grow more limbs in order to multitask at a greater rate and I'm also investigating the possibilities of cloning. Because nothing would be more useful than having multiples of me, and that way, I could do all of the things I'd like to do in the short amount of time we all have here.

If society becomes comfortable with cloning and sees value in true human diversity, then the whole Neanderthal creature itself could be cloned by a surrogate mother chimp - or by an extremely adventurous female human.

I laughed when Steven Spielberg said that cloning extinct animals was inevitable. But I'm not laughing anymore, at least about mammoths. This is going to happen. It's just a matter of working out the details.