My mom was on the United Way group that decides how to allocate the money and looks at all the different charities and makes the very hard decisions about where that pool of funds is going to go.

Depending on how quickly you get ocean rise, you have people who live in river deltas [at risk]. Bangladesh is largely a river delta, and the rising sea level means that when storms come in, the human sanitation is backing up, the ability to farm, it's destructive-type situations like you saw in New Orleans with Katrina. You're increasing the frequency of that stuff in low-lying areas fairly dramatically.

Nigeria has moved into low-middle-income, but their north is very poor, and the health care systems there have broken down.

The fight against AIDS in China is already well underway. The Chinese government and other funders are providing major support, and they'll continue to bear primary responsibility for delivering prevention and treatment.

I have been struck again and again by how important measurement is to improving the human condition.

I was lucky to be involved and get to contribute to something that was important, which is empowering people with software.

I believe technology will continue to become more affordable and more people will have the chance to use it. This will help more people get medical care and a good education.