Coastal New York and Alaska…how has it Changed, and How Rapidly?

Last Ice Age Retreat…What, When, and How?

What did New York and Alaska look like at the end of the last ice age?  When did the ice actually leave the area, and what plants and animals came in from areas to the south?  We show examination of sediment cores from the region, using microscopes, plant macrofossils, and posters.  Glacial clay from the Hudson River will be distributed.  How fast do plants migrate, and exactly how?