Britain is one of the richest countries in the world. So why do we have so many children living in poverty - well over 3 million? And why are we failing to do anything about it? Children from poor families tend to have low aspirations, to be less successful at school, to fall more easily into crime, and to suffer from chronic long-term illnesses. To put those things right later on is expensive for the taxpayer. We know that child poverty can be avoided....