Dr Kary Mullis, Nobel Prize Winner in Chemistry, 1993, discovered how to clone DNA. He also grew up in Columbia, S.C.! He earned a Ph.D in biochemistry from the University of California, Berkeley.
In this program, Dr. Mullis explains that using trial and error is the way that he has accomplished much of his work.
He explains PCR and how it works. What he discovered was how molecules could be used to do the looking for you, and they could find the thing you want, and then copy it. He says it's like turning a haystack with a needle lost in it, and it turns it all into needles. He explains how he wasn't sure his idea was correct because someone else would have already done it and it was such a simple idea.
Dr. Mullis says science is a way of thinking, and that you can apply science to studying anything.