The voicemails changing farmers' lives

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2019's Nobel laureate for the economic sciences, Michael Kremer, spoke to Gareth Mitchell about a service he helped to develop that aids farmers in developing countries. The voicemail service offers local, time-sensitive advice to improve yields. Owen Brader, CEO of Precision Agriculture for Development, also explains how the system works. (Image: A farmer talking on smart phone. Credit: pixelfusion3d)