I probably jumped the gun slightly when I blogged about how cold it was last week, particularly given how mild it has been since. Earlier I saw the jaw-dropping news that temperatures in North America could soon reach as low as -45C. I must say I find that astonishing: I had no idea that temperatures on Earth, outside the Arctic or Antarctic, could get so low. Last week was cold enough, but how could anyone survive such freezing weather? I certainly couldn’t: my powerchair would probably just cease up as soon as I went outside, so my heart goes out to any fellow disabled people who have to cope in such scary conditions. I also worry about what this weather implies regarding climate change.