The biggest pieces of work that we do are vaccines, because those save lives, and also family planning. Because if a woman can space the births of her children, it changes everything for her health and her child's health.

If we don't empower women, we don't allow them to unlock the potential of themselves and their children.

We started our foundation because we believe we have a real opportunity to help advance equity around the world, to help make sure that, no matter where a person is born, he or she has the chance to live a healthy, productive life.

Like in Africa, if somebody doesn't have fuel, they're still going and collecting firewood. If they get an oven, that's a huge difference. You can do things to reduce the inequities by making sure that they can get clean energy, safe energy. To make sure they're not having to collect water every day. That's huge for women in the developing world.

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.

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.

Microsoft certainly makes products for the Macintosh.