The fact that 98 percent of women in [the U.S.] who are sexually experienced say they use birth control doesn't make sex any less sacred. It just means that they're getting to make choices about their lives.

Bill and I both firmly believe that even the most difficult global health problems can be solved.

We [with Bill Gates] started to make decisions about what we'd invest in. Then I actually started traveling for the foundation. I've probably been to India now eight times at least and Africa numerous times.

When we better understand the realities of these women's lives, we are able to design and deliver solutions that are more useful to them.

We also ought to recognize that unpaid labor falls predominantly to women. The other thing I would do in countries like the U.S. is to show more men, even in TV ads, doing household work. Only two percent of ads show men doing chores, and yet we know they actually do several hours of it in real life. Those images affect young boys and girls.

Today is International Women's Day, and there's a fantastic set of pieces running by an organization called ONE called "Poverty Is Sexist." It's a great way to quickly learn about what's actually going on for women in poverty around the world, and then do something about it.

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.