California is in a severe drought. Normally it rains in the time from mid-October to March, but for the past few years it has been bone dry. Some say we may only have a year of water left. We are thirsty.
Life in Africa's Sahel region is precarious. There is little biodiversity, annual crops offer a meager harvest, and when the rains don't come famine does. But there is a way to break this cycle.