Some of these people cottoned on to what we’re doing to the planet years ago. I feel like a late arrival to a fairly scary party.

I gave up flying in 2004. I’d just published a paper looking at the carbon emissions that come from climate scientists like me attending conferences, which academics do a lot. It would have been hypocritical for me to flag up flying as the major part of my carbon footprint, and then carry on doing it.

And:

I feel I need to be somewhere where I’m growing my own food, living in an eco-house, trying to live off-grid. It would give me some security; I don’t feel secure where I live in Cambridge at the moment – I’m concerned by thoughts like, “What would happen if I turned the tap on and there was no water?”. On our current trajectory, cities will not necessarily be safe places in the future – possibly within my own lifetime, certainly within my children’s.

And yet, I am surrounded by people who have not even started to get dressed for that party.