Karol Boudreaux, Senior Research Fellow at George Mason University's Mercatus Center, talks with EconTalk host Russ Roberts about her field work and research in Rwanda and South Africa. In Rwanda, she studied how a change in incentives and property rights for coffee farmers has allowed the coffee bean growers to improve quality and prosper. In South Africa's Langa Township, she looked at how renters were allowed to become homeowners and how the ability to own changed their lives.