Photo: Karen Homer

Mary Oyunga, pictured here, is an African scientist who studies Vitamin A deficiency, and addressing it with OFSPs – orange flesh sweet potatoes, superior at Vitamin A delivery compared to the less-nutritious sweet potatoes common to Africa. How to disseminate this locally-grown nutrition upgrade? One method is by giving out sweet potato vines at pre-natal visits. It incentivizes pre-natal care and upgrades the nutrition of the mom, the baby, and the whole family.