In low-income countries, getting to a health post is hard. It's very expensive.

In low-income countries, the main problems you have is infectious diseases.

If you're low-income in the United States, you have a higher chance of going to jail than you do of getting a four-year degree. And that doesn't seem entirely fair.

In inner-city, low-income communities of color, there's such a high correlation in terms of educational quality and success.

Some very poor countries run great vaccination systems, and some richer ones run terrible programs.

Rich countries can afford to overpay for things.