Africa could become the continent of a billion “angry, underfed, under-educated and under-employed” young people by 2050. How should we avoid this? One way is too invest trillions of dollars in educating them and employing them -- but it won't be easy to obtain that much money for this.

Another way is to invest a few billion in reliable birth control, and sterilization. This will avoid not only the billion hungry unemployed, but also the damage that would be done by the population increase.

If the human population keeps increasing, we will wipe out nature and then wipe out humanity.