David Cameron has always promised to tackle climate change. But right now, there’s a risk that he’s about to break that promise.

His own experts have just made recommendations for bold new climate targets. But hardliners in the Treasury are lobbying him to ignore their advice. It looks like the decision could go either way.

We need to send Cameron and Clegg thousands of messages, asking them to keep their promise. If enough of us get in touch, they will realise that they can't get away with watering down their climate targets.