By one estimate, the federal government and the Federal Reserve have lent, spent or committed $12.8 trillion to combat the current recession—and the end is not yet in sight. These commitments include attempted bailouts of troubled financial firms, funds for automakers, loan guarantees, economic-stimulus funding for projects, tax breaks and purchases of toxic mortgages. Taken in its totality, this golden eruption dwarfs any federal spending plan ever undertaken. Related Links: Dollars Roll Out At Uneven Pace Therein lies the problem. With a potential prize roughly equal to the gross domestic product of the U.S. in 2008, every hustler on the
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.