On a positive note, falling sea levels will open up more land for long-term development; since according to researches, ice ages last about 100,000 years; whereas warm periods between ice ages only last about 12,000 years. Our last ice age ended 12,000 years ago.
On the down side, the last ice age may have wiped out the civilization that came before us quite thoroughly. I used to look at our civ and wonder how it could all be destroyed so that no trace could be found. But then I thought, glaciers could do it. Wipe out all traces beyond legends and a few temples in the tropical parts of the globe where the glaciers never reached.
I don’t think all traces of us could be wiped out now, due to the way we’ve plasticized everthing in this universe with plastic residue.