...if the whole world wished to consume at the level of the United States - a consumption pattern which has been fuelled, incidentally, by the credit binge which led to the current economic crisis - we would need, conservatively, over 5 planets like earth to support them. But, under the current pattern of unequally distributed benefits from growth, to lift everyone in the world onto a modest $3 per day, would require the resources of around 15 planets like ours. Where, you might ask, will the other 14 come from?