We are getting close to what might be called The Noah Scenario. Last month was the wettest January in Britain since records began in 1767. So far this month has been no different, and the Met Office expects the wind and rain to continue until March. Climate change may be a gradual process, but people who live on the Somerset Levels or the banks of the Thames are getting a very sudden education in the value of arks.

It's unlikely that these floods will be the last such catastrophe, or the worst. Climate scientists expect bigger and more frequent extreme weather events throughout the coming century – not just wind and rain, but droughts as well. Nor is weather the only danger: pandemic flu, nuclear weapons, antibiotic resistance, environmental catastrophe and chronic food shortages could also offer dire threats to civilisation as we know it. You might not want to panic just yet, but you might decide that it is time to join the "preppers" – people who are secretly preparing to abandon modern life when the apocalypse, in whatever form, does arrive.