It is not the same disaster as some sci-fi films have portrayed. However, it would mean cities such as New York would need sea walls much like Holland. Many major cities on the coast, with the exception of Los Angeles, would require extensive sea walls much as seen with Holland. Remember that while a few feet does not sound like much, given that coasts have small slopes, say only a few degrees, a few feet of sea level rise can mean hundreds or thousands of feet the ocean encroaches. Pleistocene humans did not have sea ports. LC -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to firstname.lastname@example.org. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.