The single most effective contribution you can make to the environment?

is have less children, according to the British Medical Journal.

I've said it before and I'll say it again - this is the nettle we have to grasp.

The major world religions all encourage big families (wonder why?), and IMHO they should urgently consider the impact of this on God's earth (as they would see it - I'm a heathen and proud!). The news that there is a growing clamour for a change on the contraception ban within the Catholic Church is a welcome development.