Over two decades ago, the original version of this program depicted the effects of wind, waves, and tides on the coastline of southeastern Massachusetts. Revised and updated for the 21st century, this edition takes a new look at the problem of erosion along America’s shores, emphasizing the impact of climate change and sea level rise on our coasts. Continuing its case study of Cape Cod and the surrounding region, the film shows how beaches and dunes are formed and migrate, shaped by wind, waves, and the movement of sand—all in the wider context of global warming and human development. Also included: a hard look at the future of America’s once-pristine marine settings. (25 minutes)