Hill Valley

Hill Valley may refer to:

Back to the Future

Back to the Future is a 1985 American science-fiction adventure comedy film directed by Robert Zemeckis, written by Zemeckis and Bob Gale, produced by Gale and Neil Canton, and starring Michael J. Fox, Christopher Lloyd, Lea Thompson, Crispin Glover and Thomas F. Wilson. Steven Spielberg, Kathleen Kennedy, and Frank Marshall served as executive producers. In the film, teenager Marty McFly (Fox) is sent back in time to 1955, where he meets his future parents in high school and accidentally becomes his mother's romantic interest. Marty must repair the damage to history by causing his parents-to-be to fall in love, and with the help of friend, eccentric scientist Dr. Emmett "Doc" Brown (Lloyd), he must find a way to return to 1985.

Zemeckis and Gale wrote the script after Gale mused upon whether he would have befriended his father if they had attended school together. Various film studios rejected the script until the financial success of Zemeckis' Romancing the Stone. Zemeckis approached Spielberg, who agreed to produce the project at Amblin Entertainment, with Universal Pictures as distributor. The first choice for the role of Marty McFly was Michael J. Fox. However, he was busy filming his television series Family Ties and the show's producers would not allow him to star in the film. Consequently, Eric Stoltz was cast in the role. During filming, Stoltz and the filmmakers decided that the role was miscast, and Fox was again approached for the part. Now with more flexibility in his schedule and the blessing of his show's producers, Fox managed to work out a timetable in which he could give enough time and commitment to both.

Human back

The human back is the large posterior area of the human body, rising from the top of the buttocks to the back of the neck and the shoulders. It is the surface opposite to the chest, its height being defined by the vertebral column (commonly referred to as the spine or backbone) and its breadth being supported by the ribcage and shoulders. The spinal canal runs through the spine and provides nerves to the rest of the body.

Structure

The central feature of the human back is the vertebral column, specifically the length from the top of the thoracic vertebrae to the bottom of the lumbar vertebrae, which houses the spinal cord in its spinal canal, and which generally has some curvature that gives shape to the back. The ribcage extends from the spine at the top of the back (with the top of the ribcage corresponding to the T1 vertebra), more than halfway down the length of the back, leaving an area with less protection between the bottom of the ribcage and the hips. The width of the back at the top is defined by the scapula, the broad, flat bones of the shoulders.

Future

The future is what will happen in the time after the present. Its arrival is considered inevitable due to the existence of time and the laws of physics. Due to the apparent nature of reality and the unavoidability of the future, everything that currently exists and will exist can be categorized as either permanent, meaning that it will exist forever, or temporary, meaning that it will end. The future and the concept of eternity have been major subjects of philosophy, religion, and science, and defining them non-controversially has consistently eluded the greatest of minds. In the Occidental view, which uses a linear conception of time, the future is the portion of the projected time line that is anticipated to occur. In special relativity, the future is considered absolute future, or the future light cone.

In the philosophy of time, presentism is the belief that only the present exists and the future and the past are unreal. Religions consider the future when they address issues such as karma, life after death, and eschatologies that study what the end of time and the end of the world will be. Religious figures such as prophets and diviners have claimed to see into the future. Organized efforts to predict or forecast the future may have derived from observations by early man of heavenly objects.

Hill

A hill is a landform that extends above the surrounding terrain. It often has a distinct summit, although in areas with scarp/dip topography a hill may refer to a particular section of flat terrain without a massive summit (e.g. Box Hill, Surrey).

Terminology

The distinction between a hill and a mountain is unclear and largely subjective, but a hill is universally considered to be less tall and less steep than a mountain. In the United Kingdom, geographers historically regarded mountains as hills greater than 1,000 feet (300 m) above sea level, which formed the basis of the plot of the 1995 film The Englishman Who Went Up a Hill But Came Down a Mountain. In contrast, hillwalkers have tended to regard mountains as peaks 2,000 feet (610 m) above sea level: the Oxford English Dictionary also suggests a limit of 2,000 feet (610 m) and Whittow states "Some authorities regard eminences above 600 m (2,000 ft) as mountains, those below being referred to as hills." The Great Soviet Encyclopedia defines hill as an upland with a relative height up to 200 m (660 ft).