With a click of the 'Post Comment' button, Netizens can quickly bring down the level of dialogue. Bloggers lob zingers, commenters trade barbs, and bullies target kids in the cyber schoolyard. Mudslinging - a time-honored political tradition - thrives on the Web.

On the Web no subject is sacrosanct. No one, from icon to unknown, is off-limits.

For women of my generation, it was the 'juggling act.' Jobs, marriage, children, homes, and aging parents were the balls we added, tossing them in the air as our lives filled up and praying they wouldn't come crashing down on our heads.

Social activism has gone mainstream. A new generation of philanthropic leaders such as Bill and Melinda Gates, and Bono are providing inspiration, guidance, and billions of dollars through their global foundations.

My experience in science has always been that the future always exceeds what we believe is possible. I suspect that we will explore the universe.

The primary way that we know about what lives in the ocean is we go out and drag nets behind ships. And I defy you to name any other branch of science that still depends on hundreds-of-year-old technology. The other primary way is we go down with submersibles and remote- operated vehicles. I've made hundreds of dives in submersibles.

To the field of synthetic chemistry belongs an array of responsibilities which are crucial for the future of mankind, not only with regard to the health and needs of our society, but also for the attainment of a deep understanding of matter, chemical change, and life.

It is not enough to know your craft - you have to have feeling. Science is all very well, but for us imagination is worth far more.