Ordinarily, when there's a leak in an underground natural gas pipeline, the affected section of pipe has to be excavated and replaced. Soon, however, a pipe-inspecting and -repairing modular robot may ...

The exact cause of the natural gas explosion that killed eight people, injured at least 50, and displaced 100 others when it leveled two buildings in East Harlem in March hasn't been determined, but ...

Engineers have been working overnight to repair damage to a mains pipe that has left thousands of homes and other buildings ...