In San Francisco, tech boom has left people priced out of housing
In San Francisco, far from the picturesque, winding streets in the hills, a glistening skyscraper represents how the country's tech titans have transformed the city - and made it one of the world's most expensive places to live. The figures are mind-boggling: average monthly rent for a two-room apartment in the city by the bay now runs to $3,700, the highest in the United States. And