Childcare is a huge issue for young women whose work may require them to leave their families for weeks at a time.

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

Photosynthetic organisms in the sea yield most of the oxygen in the atmosphere, take up and store vast amounts of carbon dioxide, shape planetary chemistry, and hold the planet steady.

If I seem like a radical it's because I have seen things that others have not.

There is this sweet spot in time when we have an opportunity to stop killing sharks and tunas and swordfish and other wildlife in the sea before it's too late.

We don't have to be that greedy generation that just continued to take down the underpinnings of what makes the planet work in our favor.

Fortunately, we know more about the problems that we have than in all preceding history. We know now the consequences of the things that we put into the air, into the water - of the way we treat life on Earth.