I am driven by what I know; that the world I love is in trouble.

Historically, girls have not been encouraged to be scientists, to be explorers, and there's a social kind of constraint, of course. Having the responsibility, a disproportionate part of the responsibility, for caring for families, caring for children. I know this challenge from firsthand experience because I have three children and four grandsons.And some of the time I have spent as a scientist and as an explorer has meant choosing to not be with my children and grandchildren as much as I might otherwise have done had I not been a scientist, an explorer.

We want to believe that we can continue doing what we've done for the past thousand years and not worry about the consequences coming back to us.

If somebody dumps something noxious in my back yard, the dumper is the last one I would call on to repair the damage.

No water, no life. No blue, no green.

When I arrived on the planet, there were only two billion. Wildlife was more abundant, we were less so; now the situation is reversed.

I personally have stopped eating seafood.