The death of a child is an incredible tragedy all over the world. Back in 1990, about 12 percent of children were dying before they reached the age of 5.

The CEO's role in raising a company's corporate IQ is to establish an atmosphere that promotes knowledge sharing and collaboration.

Microsoft has long hired based on IQ and "intellectual bandwidth."

You may have heard of Black Friday and Cyber Monday. There's another day you might want to know about: Giving Tuesday. The idea is pretty straightforward. On the Tuesday after Thanksgiving, shoppers take a break from their gift-buying and donate what they can to charity.

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.

Our work in global health is about things like cutting childhood deaths, and every year we continue to make progress there.

I believe in generous aid policies.