Global sea-level rise … apparently, over the last 18,000 years since the peak of the last Ice Age, global sea-levels have risen more than 120 metres. The IPCC (Inter-governmental Panel on Climate Change) estimates a rise – factoring in global warming – of 110 to 770mm over the next century. Now, let me get this straight: the average per century rise over the last 18,000 years has been 670mm, which is much more than the mean of the IPCC rate. Could it be that the sea level rise we are presently seeing is just a fluctuation? Remember, we're still not out of the last Ice Age. Anyway, we’ve got a hundred years to raise our sea defences by a maximum of three-quarters of a metre – that’s 7.7mm a year. Goodness gracious, we’re all doomed.