Courtesy of Louisiana Coastal Protection and Restoration Authority ONGOING Cleanup continues on Gulf Coast, including work at Elmers Island, La. (above). Energy giant BP's $7.8-billion settlement with individuals and businesses harmed by the Deepwater Horizon oil spill resolves most lawsuits against the company by private citizens but still leaves open the federal government's and the five Gulf states' law-enforcement and natural-resource damage claims. The U.S. District Court in New Orleans will consider the federal and state claims in the near future. The outcome could bring more dollars for further Gulf Coast cleanup and restoration.On March 2, just before its trial
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.