Guns in church show that whatever is said about trust in God, it's really the threat of violence that we are trusting, says Simon Barrow. And this contradiction opens up a rich vein of satire against our patently false gods.

Saving the environment is a serious business – but you can still have a laugh doing it. That’s the message of UK development agency Christian Aid in launching a couple of hilarious YouTube videos aimed at getting people to take up the eco-challenge with a smile on their faces.