Apple formally introduced the Macintosh computer to shareholders and press days after its iconic Super Bowl ad, showcasing its graphical interface and mouse to a stunned audience.

Two days after its iconic Super Bowl ad, Apple's Macintosh personal computer went on sale, introducing millions to the mouse and graphical desktop.

Apple released the Macintosh 512K, quadrupling the original Mac's memory and answering critics who dismissed the machine as underpowered.

Amid the rapidly evolving personal computer market of the mid-1980s, engineering work advances toward machines that would soon replace 8-bit systems entirely.

IBM's ill-fated home computer, the PCjr, went on sale nationwide, undercut by a widely mocked 'chiclet' keyboard and incompatibility with existing PC software.

A lightning bolt struck York Minster's south transept roof, sparking a fire that destroyed the medieval timber roof before firefighters brought it under control.

Svetlana Savitskaya became the first woman to perform a spacewalk, working outside the Salyut 7 space station for over three hours.

Britain and China initialed the Sino-British Joint Declaration, agreeing Hong Kong would return to Chinese rule in 1997 under 'one country, two systems.'

A day after the IRA's Brighton bombing nearly killed her, Margaret Thatcher insisted the Conservative Party conference proceed on schedule, delivering her speech as planned.

The Nobel Committee awarded South African Bishop Desmond Tutu the Peace Prize for his nonviolent campaign against apartheid.

Indian Prime Minister Indira Gandhi is shot dead by two of her own Sikh bodyguards at her residence, avenging a military raid on the Golden Temple.

A leak of toxic methyl isocyanate gas from a Union Carbide pesticide plant killed thousands in their sleep in one of history's worst industrial disasters.

A Union Carbide pesticide plant in Bhopal, India leaked 40 tons of methyl isocyanate gas, killing thousands in one of history's worst industrial disasters.