In the 21st century, turf grass is the number one crop grown in the U.S. When suburbia exploded after World War II, turf became the defining characteristic of nearly every yard.

Driven by the need for deep sea rescue and salvage capabilities, the U.S. Navy Diving and Salvage Programs have gathered together a highly skilled team of divers and engineers.

A steam pipe explosion rocks New Yorkers on a summer day in Midtown Manhattan. Boston's Big Dig highway project suffers a major setback.