What's your source? Having lived for over a decade in southern Africa, I find that somewhat hard to believe... If you say that only 7% is being used for farmin

What's your source? Having lived for over a decade in southern Africa, I find that somewhat hard to believe... If you say that only 7% is being used for farming, then yes, that might be accurate - the population density is way lower than, say, Europe. But I'm pretty sure a whole lot more than that is potentially usable.