Reducing flood risk on the Mississippi River delta is big business. The U.S. Army Corps of Engineers is working with a $14.3-billion appropriation to bring the Greater New Orleans Hurricane and Storm Damage Risk Reduction System to 100-year levels of protection by June 1, 2011. Photo: Shaw Environmental and Infrastructure Group Pile driving for $695 million IHNC barrier. Cost expected to climb. Related Links: Engineers Focus On Big Delta Threats Building With Nature by Weaving Defenses California Wants a Sea-Level-Rise Plan, But Money Is an Issue Connecting the Rocks Defining Protection To Know the Risk Climate-Proofing Rotterdam This will be
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.