A documentary film is a nonfictional motion picture intended to document reality, primarily for the purposes of instruction, education, or maintaining a historical record. "Documentary" has been described as a "filmmaking practice, a cinematic tradition, and mode of audience reception" that is continually evolving and is without clear boundaries. Documentary films were originally called 'actuality' films and were only a minute or less in length. Over time documentaries have evolved to be longer in length and to include more categories, such as educational, observational, and even 'docufiction'. Documentaries are also educational and often used in schools to teach various principles. Social media platforms such as YouTube, have allowed documentary films to improve the ways the films are distributed and able to educate and broaden the reach of people who receive the information.

Michael Edward Arth is an American artist, builder, architectural and urban designer, and political scientist.

DeLand is a city in the U.S. state of Florida. It is the county seat of Volusia County. The city sits approximately 34 miles (55 km) north of the central business district of Orlando, and approximately 23 miles (37 km) west of the central business district of Daytona Beach. As of the 2010 U.S. Census, the city had a population of 27,031. It is a part of the Deltona–Daytona Beach–Ormond Beach metropolitan area, which was home to 590,289 people as of the 2010 census.

Homelessness is defined as living in housing that is below the minimum standard or lacks secure tenure. People can be categorized as homeless if they are: living on the streets ; moving between temporary shelters, including houses of friends, family and emergency accommodation ; living in private boarding houses without a private bathroom and/or security of tenure. The legal definition of homeless varies from country to country, or among different jurisdictions in the same country or region. According to the UK homelessness charity Crisis, a home is not just a physical space: it also provides roots, identity, security, a sense of belonging and a place of emotional wellbeing. United States government homeless enumeration studies also include people who sleep in a public or private place not designed for use as a regular sleeping accommodation for human beings. People who are homeless are most often unable to acquire and maintain regular, safe, secure and adequate housing due to a lack of, or an unsteady income. Homelessness and poverty are interrelated.

New Urbanism is an urban design movement which promotes environmentally friendly habits by creating walkable neighborhoods containing a wide range of housing and job types. It arose in the United States in the early 1980s, and has gradually influenced many aspects of real estate development, urban planning, and municipal land-use strategies.

Walking is one of the main gaits of locomotion among legged animals. Walking is typically slower than running and other gaits. Walking is defined by an 'inverted pendulum' gait in which the body vaults over the stiff limb or limbs with each step. This applies regardless of the unusable number of limbs—even arthropods, with six, eight, or more limbs, walk.

Michael Francis Moore is an American documentary filmmaker and author. He is best known for his work on globalization and capitalism. Moore has been labeled a left-wing documentary filmmaker and left-wing political activist, however, he rejects the label "political activist".

New Pedestrianism (NP) is a more pedestrian and ecology-oriented variation of New Urbanism in urban planning theory, founded in 1999 by Michael E. Arth, an American artist, urban/home/landscape designer, futurist, and author. NP addresses the problems associated with New Urbanism and is an attempt to solve various social, health, energy, economic, aesthetic, and environmental problems, with special focus on reducing the role of the automobile. A neighborhood or new town utilizing NP is called a Pedestrian Village. Pedestrian Villages can range from being nearly car-free to having automobile access behind nearly every house and business, but pedestrian lanes are always in front.

The 11th Hour is a 2007 documentary film on the state of the natural environment created, produced, co-written and narrated by Leonardo DiCaprio. It was directed by Leila Conners Petersen and Nadia Conners and financed by Adam Lewis and Pierre André Senizergues, and distributed by Warner Independent Pictures.

Joe Strummer: The Future Is Unwritten is a 2007 documentary film directed by Julien Temple about Joe Strummer, the lead singer of the British punk rock band The Clash, that went on to win the British Independent Film Awards as Best British Documentary 2007. The film premiered 20 January 2007 at the 2007 Sundance Film Festival. It was also shown at the Dublin Film Festival on 24 February 2007.

A pedestrian village is a compact, pedestrian-oriented neighborhood or town, with a mixed-use village center, that follows the tenets of New Pedestrianism. Shared-use lanes for pedestrians and those using bicycles, Segways, wheelchairs, and other small rolling conveyances that do not use internal combustion engines. Generally, these lanes are in front of the houses and businesses, and streets for motor vehicles are always at the rear. Some pedestrian villages might be nearly car-free with cars either hidden below the buildings or on the periphery of the village. Venice, Italy is essentially a pedestrian village with canals.

Scottsboro: An American Tragedy is a 2001 American documentary film directed by Daniel Anker and Barak Goodman. The film is based on one of the longest-running and most controversial courtroom pursuits of racism in American history, which led to nine black teenaged men being wrongly convicted of raping a white woman in Alabama. The film received an Oscar nomination for Best Documentary Feature. It was funded in part by the National Endowment for the Humanities.

In computational complexity theory, a problem is NP-complete when it can be solved by a restricted class of brute force search algorithms and it can be used to simulate any other problem with a similar algorithm. More precisely, each input to the problem should be associated with a set of solutions of polynomial length, whose validity can be tested quickly, such that the output for any input is "yes" if the solution set is non-empty and "no" if it is empty. The complexity class of problems of this form is called NP, an abbreviation for "nondeterministic polynomial time". A problem is said to be NP-hard if everything in NP can be transformed in polynomial time into it, and a problem is NP-complete if it is both in NP and NP-hard. The NP-complete problems represent the hardest problems in NP. If any NP-complete problem has a polynomial time algorithm, all problems in NP do. The set of NP-complete problems is often denoted by NP-C or NPC.

Democracy and the Common Wealth: Breaking the Stranglehold of the Special Interests is a 2010 book by urban designer, policy analyst and artist Michael E. Arth. Arth attempts to expose what he calls the "dirty secrets" of America's electoral system, and provides a list of solutions that he believes will result in a "truly representative democracy." This democracy would be led by effective, trustworthy leaders, who would be elected by a majority, and who would not have to spend their time raising campaign funds, or catering to paid lobbyists.