New Earth

A map of the new coast line of the world after a 100 meter rise in sea levels. Assuming that this came from melting polar caps - it would be an 80% reduction in ice.

This would be the map that I could use for a post-modern setting. It re-writes the geography enough to make things interesting.

I could also have the 100m rise in sea levels be a temporary thing and then have them recede over the years.