Streetcars in North America Streetcars in North America Electric streetcars or trolley(car)s (North American English for the European word "tram") were once the chief mode of public transit in hundreds of North American cities and towns. Most of the original urban streetcar systems were either dismantled in the mid-20th century or converted to other modes of operation, such as light rail. Today, only Toronto still operates a streetcar network essentially unchanged in layout and mode of operation. Older surviving lines and systems in Boston, Cleveland, Mexico City, Newark, Philadelphia, Pittsburgh, and San Francisco were often infrastructure-heavy systems with tunnels, dedicated right-of-way, and long travel
HIV/AIDS in North America for Disease and Control and Prevention (CDC), African-American accounted for 44% of all new HIV infections in the United States between 2010 and 2016, although African-Americans make up roughly 12% of the American population. The extent of the HIV/AIDS crisis within the African-American community is an indication that the solution will also need to be multi-faceted ranging from increasing access to health care to reducing the stigma that HIV and homosexuality has within the African-American community. HIV/AIDS in North America As of 2016, it is estimated that there are 1.5 million adults and children living with HIV/AIDS in North America,