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.

The Endangered Species Act is the strongest and most effective tool we have to repair the environmental harm that is causing a species to decline.

If we want to address global warming, along with the other environmental problems associated with our continued rush to burn our precious fossil fuels as quickly as possible, we must learn to use our resources more wisely, kick our addiction, and quickly start turning to sources of energy that have fewer negative impacts.

Statistics vary, but in less than seven years there won't be a single cell left in any of our bodies that's the same as it is today. This means that any human being who 'wants' to change is like a mountain river wanting to reach the valley floor. It's a done deal; that's what mountain rivers do, and 'changing' should be our first nature.

We firmly believe the environmental issues cannot be addressed without extensive public participation, but people need to be informed before they can get involved.