Climate Compass on MSNOpinion

The silent failure of America's aging dams

America's dams are currently averaging 64 years old, and most of us don't give them a second thought until something goes ...
The second deadliest dam failure in U.S. history happened suddenly. The St. Francis Dam was a 205-ft-high concrete gravity arch dam located in San Francisquito Canyon, 30 miles north of Los Angeles.