The observations that have developed over the years have given us perspective about where we fit in. We are newcomers, really recent arrivals on a planet that is four and a half billion years old.

We must protect our ocean as if our lives depend upon it, because they do.

All through college, I had frequently been the only girl in a science class - which wasn't such a bad deal.

Use your power to do whatever it takes to secure for humankind an enduring place on this little blue speck in the universe - our only hope.

In the past few decades, Earth's natural systems have endured more pressure than in all preceding human history.

I hope that someday we will find evidence that there is intelligent life among humans on this planet.

Everybody can make choices that will make peace with the natural world.