Scientists have been studying Mars for years as it has certain conditions which make it a favourable location for a human base. If that ever happened, we would need to be able to cultivate plants there, in order to provide us with food, like potatoes. In preparation for growing plants autonomously on Mars, how can we find smart ways to irrigate a plant on Earth without the need for a human to be present? Let’s investigate! In this video, you will learn how to build and program a Do-it-yourself plant watering sytem.