Soviet President Mikhail Gorbachev and US President George H. W. Bush declared an end to the Cold War.
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Agatha Christie mysteriously disappeared for 11 days.
The US Defense Secretary announced that the US Military would open all combat roles to women.
Neon lighting was first demonstrated at the Paris Motor Show by Georges Claude.
Spotify announced Drake as the most-streamed star of the 2010s with 28 billion streams, and Ed Sheeran's 'Shape Of You' as the most-streamed track with 2.4 billion streams.
The original PlayStation was launched in Japan.
