My father left me with a clear sense that the media was something different.

No one's going to be able to operate without a grounding in the basic sciences. Language would be helpful, although English is becoming increasingly international. And travel. You have to have a global attitude.

You've got to look for a gap, where competitors in a market have grown lazy and lost contact with the readers or the viewers.

So long as I can stay mentally alert - inquiring, curious - I want to keep going. I love my wife and my children, but I don't want to sit around at home with them. We go on safaris and things like that. I can do that for a couple of weeks a year. I'm just not ready to stop, to die.

Imagine if we succeed in inspiring our audiences to reduce their own impacts on climate change by just 1 percent. That would be like turning the state of California off for almost two months.

Somebody talked me into writing an autobiography about six or seven years ago. And I said I'd try. We talked into a tape recorder, and after a couple of months, I said, To hell with it. I was so depressed. It was like saying, 'This is the end.' I was more interested in what the hell was coming the next day or the next week.

I am amazed that CNN can't get its act together.