Most of my memories of Copenhagen involve walking.
I'm writing this column in a Copenhagen café (good coffee here, and at £4 a cup you don't drink too much of it) on Monday, with five days of negotiations at the climate change summit stretching out ahead.
After ten years in Beijing, I thought I knew about sandstorms. Every spring the dust blows off the Mongolian steppe and veils the Chinese capital in a murky shroud.
If ever there was a bad week to start talking again about extra airport runways - and not just at Heathrow, but Gatwick, too - surely this was it.
It's a relief to watch the whole environmental movement getting on its feet just in time for Copenhagen.
Economic reality is a curious thing. The term has a solid, reassuring sound. To go against it would be very foolish and immature. But what exactly is it?
As the jobless count continues to rise, it has been predicted that bank bonuses could reach £6bn. Is this the sign of recovery, or is there an alternative?