By that time, I was working with a tape recorder. Actually, it was Kubrick that introduced me to tape recorders. I didn't have one. But he had a reel-to-reel tape recorder and we recorded the interviews. They're now on a CD. They put it on a CD and they're available commercially, this particular set of interviews I did with Kubrick because I had them transferred onto a proper CD from the reel-to-reel.

But by the time I was doing Rabi and Bethe, I had a… we had real tape recorders, and it was easy to do. So I had the tape recorder and I interviewed Bethe. Some of the interviews were here and I went to Cornell once and for hours… I must have 15 or 20 tapes on which I interviewed Bethe. And then I wrote my profile. I did what I said I was going to do. The first part was about his early life in Germany and coming here and so on, and the second part was about the war and about making nuclear weapons and Oppenheimer and Teller and those things. And the third part, then, was about the general energy question. Now, as it happened, just at this time when I was finishing this, we had Three Mile Island.