Computer Model to Help Managers with Renourishment Decisions?
Since the first project of its kind in the U.S. at Coney Island, N.Y., in 1922, coastal managers have used beach nourishment – essentially importing sand to replace sediment lost through storms or erosion – to restore damaged beaches, but it is laborious and expensive.
Life on Mekong Faces Threats As Major Dams Begin to Rise
With a massive dam under construction in Laos and other dams on the way, the Mekong River is facing a wave of hydroelectric projects that could profoundly alter the river’s ecology.
Southern Patagonia Ice Field
With an area of 13,000 square kilometers (5,000 square miles), the Southern Patagonia Ice Field is the largest temperate ice sheet in the Southern Hemisphere. This grand panorama shows that many glacier tongues showed significant annual “retreat” of their ice fronts, a familiar signal of climate change.