Nutrition and climate change expert Bill Gates on malnourishment

"So the whole generation that's malnourished, you know, then as they grow up, your investments in educating them aren't going to work as well. Your ability to move to higher paying activities, you know, it gets stalled. And without that engine of productivity, you don't get the tax collection that lets you put even more into the school system. And so that's where you get trapped, particularly in Africa, where the conditions are challenging, the population growth makes it more challenging. And then climate change, which is affecting the ability to grow food, is its most negative effect, particularly near the equator in poor countries."