For decades, Barbara Walters has been described as a broadcast pioneer - and with good reason. In 1974, Walters became the first female host of the 'Today' show. In 1976, she became the first woman to serve as a network-news anchor. In 1984, she moderated the first presidential debate between Walter Mondale and Ronald Reagan.

Most people prepare for travels by reading about their destination; it always seemed an odd approach to me. I find it much easier and more pleasant to focus with the sights and smells of a place rattling around in my mind.

It is a remarkable fact that smallpox, a scourge for thousands of years, has now vanished from the earth, except for two tiny vials, one locked in a highly secure facility at the Centers for Disease Control, in Atlanta, and another stored in a similarly secure vault in Siberia.

The history of agriculture is the history of humans breeding seeds and animals to produce traits we want in our crops and livestock.

I took physics, and lo and behold, there's a lot of physics in 'Lost.' I think for most people, liberal arts educations are more abstract, but for me, it's been a chance to apply the things I've learned more directly. I also took some Folklore and Mythology classes, and I think that a lot of that influenced me.

Science is imagination in the service of the verifiable truth, and that service is indeed communal. It cannot be rigidly planned. Rather, it requires freedom and courage and the plural contributions of many different kinds of people who must maintain their individuality while giving to the group.

An important scientific innovation rarely makes its way by gradually winning over and converting its opponents: What does happen is that the opponents gradually die out.

To me, the most exciting thing about the discovery of the Higgs particle is that its existence was predicted fifty years before its discovery through experiment.