Geography
Los Angeles and San Francisco are sliding toward each other, inch by inch
Los Angeles sits on the Pacific Plate and San Francisco on the North American Plate, with the San Andreas Fault sliding between them at roughly 5 centimetres a year — about the speed a fingernail grows. Since Los Angeles City Hall was built in 1926, the two cities have crept over 4.5 metres closer. Geologists project that in about 15 million years, Los Angeles will have slid far enough north to sit alongside San Francisco.