cassette tapes underground culture Iron Curtain Egypt

Cassette tapes carried culture beyond official channels

Small, durable cassette tapes were easy to copy. Behind the Iron Curtain, they carried underground rock and punk. In Egypt, people used them to create and share culture and challenge regimes before public internet access.

A clay tablet may show the Pythagorean rule more than 1,000 years early

A Mesopotamian clay tablet from the 18th century BCE lists number groups such as 3-4-5 and 5-12-13. These numbers fit the relationship later called the Pythagorean theorem, suggesting people knew the pattern more than 1,000 years before Pythagoras.

A French-speaking ruling class permanently changed English

After the Norman Conquest in 1066, much of England's old ruling class was replaced by French-speaking nobles. Their language mixed with English over the following centuries and permanently changed its vocabulary.

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cassette tapes underground culture Iron Curtain Egypt

Cassette tapes carried culture beyond official channels

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