The Greens have announced their tax policy: an increased top tax rate of 40% on earnings over $140,000, with the billion dollars of extra revenue targeted towards reducing child poverty. That looks like a good deal to me. Child poverty is a moral stain on our society which blights lives and denies people a decent chance in life. It also costs us a fortune. Money spent to reduce it is not a cost, but an investment, which pays off through reduced future costs for welfare, health and crime. And it speaks volumes that our current government is too short-sighted to see that.