There were two silent calls, followed by a message left on my answerphone. She had a soft, gentle voice and a mid-Wales accent. “You are a liar Mr Monbiot. You and James Hansen and all your lying colleagues. I’m going to make you pay back the money my son gave to your causes. It’s minus 18 degrees and my pipes have frozen. You liar. Is this your global warming?”. She’s not going to like the answer, and nor are you. It may be yes.