Add Yahoo as a preferred source to see more of our stories on Google. Workers install a new sheave to turn cable cars around at Powell and Market streets in San Francisco. Powell and Market has one of ...

The cable car system of San Francisco is the last manually operated cable car system in the world, with three of the original twenty-three lines still operating today. With these systems being ...

The cable car system of San Francisco is the last manually operated cable car system in the world, with three of the original twenty-three lines still operating today. With these systems being ...

Mongolia's capital Ulaanbaatar has long been plagued by notorious traffic jams and suffocating winter smog -- the result of breakneck urban growth and infrastructure that has struggled to keep up. - ...