I still fondly recall my English teacher at high school (several decades ago) describing our population here as 'like the scum around the edge of an empty batht

I still fondly recall my English teacher at high school (several decades ago) describing our population here as 'like the scum around the edge of an empty bathtub'. Despite that I do remember him as a cheery chap. Anyway, I'm sure most of the population lives near water, mostly oceans, but sometimes (inland) along rivers. Proximity to the coast is very misleading, as obviously the risk is predominantly down to elevation. As I noted, 100% of the UK live within 120km of the coast, and my weirdo assessment of their populationi aside, with an average elevation of 160 metres, most of the land will be fine. London's screwed, of course, with even only minor sea level rises. They're an exceptional case in all kinds of ways. Let's move on. Best info I can find is an NPR article that suggests some research 15 years ago estimated about 600M people lived within 10 metres of sea level. So, if Greenland goes, they're all displaced. Anyway, this doesn't really contest TFA's point, which seems to be 'large aggregate will slow down erosion'. Obviously holding your soil in place doesn't help much if it's held in place under 10 metres of saltwater.