This article is part of our exclusive IEEE Journal Watch series in partnership with IEEE Xplore.How do you supply power to agricultural Internet of Things (IoT) sensors that are scattered all over the landscape?Power is a major obstacle on the path to real-world smart agriculture. Even the most energy-efficient devices still need power to track and report GPS coordinates, moisture levels, temperatures, soil acidity, nutrient concentrations, and invading pests. And there are as many solutions as ...