This weekend a good friend of mine ended up in hospital because of a sledging accident on Hampstead Heath. That wouldn't have been possible a few years ago - the UK didn't have enough snowfall in winter for sledging. But for the last few years we've had freezing weather and snow galore. Why? And what, if anything, does it have to do with manmade climate change?
I have in the past speculated that since climate change theory predicts wetter winters cold snaps will inevitably lead to more snow. But what if the cold snaps - the Arctic winds - are being caused by the build-up of greenhouse gases in the atmosphere?
That's increasingly the conclusion of those working on the science of the Arctic. The ice-free Arctic Ocean, which is warming up faster than the rest of the planet, seems to be creating high pressure systems which are driving cold air into Europe.
Read more here in The Independent.