Beach erosion is a chronic problem along open-ocean shores of the U.S. As coastal populations continue to grow and community infrastructures are threatened by e

More and more of the nation's vast coastlines are being filled with homes and vacation resorts. The result is an increasing number of structures built on erosio

Tide gauges show that global sea level has risen about 7 inches during the 20th century, and recent satellite data show that the rate of sea-level rise is accel