Everyone agrees that the failure of our high schools is tragic. It's bad business, and it's bad policy. But we act as if it can't be helped. It can be helped. We designed these high schools; we can redesign them.

When I look at 225 million women who want contraceptives, and then I look at the 52 million unintended pregnancies that could be avoided by addressing this unmet need, where can we have the biggest impact with our voice, our dollars, our partners? It's on contraceptives. I would rather address the problem upstream.

My background was computer science and business school, so eventually I worked my way up where I was running product groups - development, testing, marketing, user education.

Abortion has become a very politicised issue that I think countries have to work out themselves. In a lot of countries, people can't even yet agree on what their laws should be.

Helping people doesn't have to be an unsound financial strategy.

If you can't travel to the developing world, look at helping to fund a woman with a small loan and follow her. Learn her story. Learn about the difference that you're making.

I felt suicidal. I couldn't stop crying. I remember thinking, wouldn't it be great if the car crashed and I died?