Host Philippe Cousteau visits geological wonders that have been shaped over time by water and ice. We go to the Grand Canyon, which is a treasure trove of earth’s history. Then Philippe visits an ancient cave on the island of Curacao; a cave that was excavated by sea water thousands of years ago. We travel to Lake Michigan and discover how glaciers created the Great Lakes. Then we look into the future, and see if our planet will ever experience another ice age.