Learn why soil is the key to stopping land degradation and increasing farm productivity. In 2011, the global population passed seven billion people. It is now on pace to reach eight billion by 2024. The rapid pace of our population growth underlines the need for healthy and productive farmland. Yet as our population increases, the amount of arable land on the planet is decreasing. Human activity and climate change are degrading once-productive farmland, decreasing the amount of food that can be grown. In this QUEST video, Will Allen explains how increasing soil fertility will ensure our future food security.