Abena Dove Osseo-Asare’s wonderful new book is a thoughtful, provocative, and balanced account of the intersecting histories and practices of drug research in modern Ghana, South Africa, and Madagascar. Bitter Roots: The Search for Healing Plants in Africa (University of Chicago Press, 2014) tells the stories of six plants, all sourced in African countries, that competing groups of plant specialists have tried to transform into pharmaceuticals since the 1880s. We spoke about it for the New Books in STS podcast and you can listen to our conversation by heading over here!