Its coming home to roost over the next 50 years or so. Its not just climate change its sheer space, places to grow food for this enormous horde. Either we limit our population growth or the natural world will do it for us, and the natural world is doing it for us right now. – David Attenborough
People talk about doom-laden scenarios happening in the future: they are happening in Africa now. You can see it perfectly clearly. Periodic famines are due to too many people living on land that cant sustain them. – David Attenborough