I agree with David Hardie (‘Global warming or not…' Letters pages, The Weekend Sun, October 21) that sea levels don't appear to be rising. I have been thinking along the same lines insofar as ice floating on the sea will not increase the levels. Some, however is on land, but I can't see that changing things to any degree. No, the real problem is that the changes in temperature are playing havoc with our weather. Strong winds push waves up higher and in different directions, causing erosion in some areas but dumping sand further along beaches. Unpleasant for people living by the beach but bearable for everyone else. Construction of groynes will alleviate some of that but who will pay for it.

Dan Russell, Welcome Bay.