In 1971, Ray Tomlinson developed the first system able to send messages between users on different hosts across the ARPANET, using the @ sign to link the user name with a destination server. By the mid-1970s, this was the form recognized as email. Although Tomlinson's first email was not preserved, he later described it as insignificant, something like "QWERTYUIOP".

The Atari 2600 is credited with popularizing the use of microprocessor-based hardware and games stored on ROM cartridges. The console came bundled with two joystick controllers, a conjoined pair of paddle controllers, and a game cartridge: initially Combat and later Pac-Man.

During the 70s, the Oakland Athletics led the league with three World Series championships (1972, 1973 & 1974).

The Apple II had the defining feature of being able to display color graphics, which is why the Apple logo was redesigned to include a spectrum of colors.

The Village People went on to score a number of disco and dance hits, including "Macho Man", "In the Navy", and their greatest hit, "Y.M.C.A.".

The 1972 Miami Dolphins went 14-0 in the regular season and won all three postseason games, including Super Bowl VII against the Washington Redskins, to finish 17-0.

Mikhail Baryshnikov, the preeminent male classical dancer of the 1970s and 80s, never returned to Russia after his 1974 defection. He became a naturalized citizen of America in 1986.

The Exorcist, which chronicles the demonic possession of a 12-year-old girl, earned 10 Oscar nominations in 1974, including Best Picture and a Best Supporting Actress nod for Linda Blair, who was just 15 years old at the time.

For the average American, drivers went from paying $0.36 per gallon at the pump in 1970 (which is equal to about $1.72 per gallon today) to $1.19 per gallon in 1980 (which is equivalent to about $2.95 per gallon).

Enter the Dragon was Lee's final completed film appearance before his death on 20 July 1973 at the age of 32. The film went on to gross an estimated US$350 million worldwide and cemented Lee's legend as one of the greatest martial artists of all time.