Rising sea levels: what’s the truth?

Where I live in the former county of Huntingdonshire is a long way from the sea. But according to some predictions of sea-level rise, it could be a lot closer soon.

Earth watch Simon Marsh

In one scenario, with widespread inundation of the Fens, Cambridge could virtually become a coastal city by 2050. London, Cardiff, Blackpool and Hull could all be severely affected. Scenarios like these are alarming and make great media headlines, but what is really going on?