The average population density was 11,457 people per square mile (4,405.4/km). The Census reported that 1,468,623 people (96.2% of the population) lived in households, 38,007 (2.5%) lived in non-institutionalized group quarters, and 19,376 (1.3%) were institutionalized. In 2013, the city reported having 668,247 total housing units, down slightly from 670,171 housing units in 2010. As of 2013[update], 87 percent of housing units were occupied, while 13 percent were vacant, a slight change from 2010 where 89.5 percent of units were occupied, or 599,736 and 10.5 percent were vacant, or 70,435. Of the city's residents, 32 percent reported having no vehicles available while 23 percent had two or more vehicles available, as of 2013[update].
What is the density?
11,457 people per square mile

During the Cold War between the Soviet Union and the United States, huge stockpiles of uranium were amassed and tens of thousands of nuclear weapons were created using enriched uranium and plutonium made from uranium. Since the break-up of the Soviet Union in 1991, an estimated 600 short tons (540 metric tons) of highly enriched weapons grade uranium (enough to make 40,000 nuclear warheads) have been stored in often inadequately guarded facilities in the Russian Federation and several other former Soviet states. Police in Asia, Europe, and South America on at least 16 occasions from 1993 to 2005 have intercepted shipments of smuggled bomb-grade uranium or plutonium, most of which was from ex-Soviet sources. From 1993 to 2005 the Material Protection, Control, and Accounting Program, operated by the federal government of the United States, spent approximately US $550 million to help safeguard uranium and plutonium stockpiles in Russia. This money was used for improvements and security enhancements at research and storage facilities. Scientific American reported in February 2006 that in some of the facilities security consisted of chain link fences which were in severe states of disrepair. According to an interview from the article, one facility had been storing samples of enriched (weapons grade) uranium in a broom closet before the improvement project; another had been keeping track of its stock of nuclear warheads using index cards kept in a shoe box.
What is another term for uranium that is enriched?
weapons grade

Lemi Ponifasio is a director and choreographer who is prominent internationally with his dance Company MAU. Neil Ieremia's company Black Grace has also received international acclaim with tours to Europe and New York. Hip hop has had a significant impact on Samoan culture. According to Katerina Martina Teaiwa, PhD from the University of Hawaii at Manoa, "Hip hop culture in particular is popular amongst Samoan youth." Like very many other countries, hip hop music is popular. In addition, the integration of hip hop elements into Samoan tradition also "testifies to the transferability of the dance forms themselves," and to the "circuits through which people and all their embodied knowledge travel." Dance both in its traditional form and its more modern forms has remained a central cultural currency to Samoans, especially youths.
Among what age group in Samoa is hip hop and dance most popular?
youths