◆ On this day

November 15

4 sourced moments from November 15 in history: Half a million people marched against the Vietnam War in Washington (1969); Intel's 4004 Put a Whole Computer Brain on One Chip (1971); The most expensive painting ever sold went for $450 million (2017), plus 1 more.

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4 things happened on November 15

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2022 Geography · Demographics

Humanity passed 8 billion people in 2022

On 15 November 2022 the UN marked the day the world's population reached eight billion.

2017 Culture & Arts · Art

The most expensive painting ever sold went for $450 million

A long-lost work attributed to Leonardo smashed every auction record — despite heavy restoration and disputed authorship.

1971 Technology · Computing & AI

Intel's 4004 Put a Whole Computer Brain on One Chip

In 1971 a tiny silicon rectangle smaller than a fingernail packed the logic of a room-sized machine and lit the fuse on the digital age.

1969 Society & Economy · Politics & Law

Half a million people marched against the Vietnam War in Washington

On November 15, 1969, an estimated half a million Americans filled Washington in the largest anti-war protest the capital had seen.