S scientists failed after trying hundreds of times to clone monkeys. They believe that a biological quirk makes cloning almost impossible with current techniques.

People have tried to clone mammals such as sheep, mice and cattle, but the success rate is poor, many of them were born with diseases and deformities. The scientists also said that the current cloning techniques might not work for all species.

I don't like people to study on how to clone creatures. I think that's not a right thing to do. I have seen some science fiction books that are talking about the world in the future when people know how to clone everything, and it's awful. People clone things illegally, and this will bring up a lot social consequences. I believe that no one wants to live in a place like that!

Sometimes, high-tech may cause a lot of trouble. For example, the Internet. People are doing lots of illegal things on the Internet these days, and it's quiet hard to stop that. I'm afraid something like this will happen after people found out the secret of cloning.
But I don't mean that there's nothing good for it. There are lots of good things, such as: clone parts of human body to make people live longer. But it's hard to do something without a negative consequences.

Cloning is always a big problem for a long time, and it still going to be a big problem in the future.