Craig – yes, I am well aware that we may have overshot already, and indeed read one pessimistic article that makes it clear that we simply do not have the energy to support the world even at a basic level (let alone that of the US); I admit to being an optimist and pro-technology and science.To hotdogger’s point, which may have been intended as humorous but reminded me of Malthus, Malthus appears to have been wrong. But we’ll see.As for you, towerwarlock: I am a PhD personality psychologist with expertise in assessment who assesses top executives for a living. IQ, besides being a biased measure, only accounts for 20% of performance. You won’t get a better world by killing off anyone who can’t score well on a Watson-Glaser. Furthermore, there is no evidence that IQ varies between religions, though some studies have shown that the higher your IQ, the less likely you are to be religious in any way.Finally, a good measure of intelligence isn’t racist — unlike you, evidently. By the way, most IQ tests do have some element of verbal skills, meaning spelling and grammar count. Just a bit of friendly advice.