Guardian: One night last December, three houses disappeared into the sea off the Norfolk coast as a huge storm surge sucked away thousands of tonnes of rock and sand from beneath them. What happened at Hemsby, and also along the coast at Happisburgh, was extreme. But not unprecedented. "O Tide that waits for no man / Spare our coasts!" sing the Suffolk fishing villagers in Britten's 1945 opera Peter Grimes, and, over the next 50 years from now, hundreds more homes could be claimed by rising water, inland as...