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
Discover Life in America Discover Life in America Discover Life in America is a non-profit NGO founded in 1998. It is based in Great Smoky Mountain National Park, and is located near the mountain resort city of Gatlinburg in Sevier County, Tennessee. The primary function of DLIA is to help administer the All Taxa Biodiversity Inventory, a joint effort with scientists and volunteers worldwide to create an inventory of all the living species located in GSMNP. This has been cited as one of the largest efforts of its kind, and has been compared to such efforts as the human genome project in terms of