
Scientists have calculated that an average human would need a wingspan of at least 6.7 metres — roughly 22 feet — to generate enough lift to fly. That's the wingspan of a small aircraft. And wings would be the least of your problems.

Mount St. Helens shook for two months and recorded more than 10,000 earthquakes before it exploded. The pressure had been building for 123 years. The science of why volcanoes don't erupt immediately turns out to be one of the most precise explanations in nature for why nothing that eventually breaks does so without warning.

In 1957, a psychologist named Leon Festinger proved that human beings will rewrite reality rather than admit they are wrong. History's greatest cover-ups didn't happen because powerful people were uniquely evil. They happened because the human brain was designed to protect itself from a very specific kind of pain

The idea that the rich have an obligation to give away their wealth is not modern. It is not progressive. It is not radical. It is older than Christianity, older than Rome, and it was articulated most bluntly by the richest man in America in 1889, who wrote that dying wealthy was a disgrace.

In 1960s Atlanta, Walter and Betty Lou Roberts ran the only integrated children's theater in the South. When the Ku Klux Klan blew up a car outside their show, Walter Roberts called intermission and carried on. This is the story that happened before a famous daughter was born.

Ellen Sadler was eleven years old when she fell asleep in a cottage in Turville, England, on a Thursday night in March 1871. Doctors came from across the world. The Prince of Wales visited. People paid for locks of her hair. And still, nobody could explain it.

In 1997, Disney slipped something rare into a summer blockbuster about a demigod. Not strength. Not glory. Just a young man who closed his eyes, pulled a sleeve back up, and gently stepped away. Twenty-seven years later, that detail still matters.
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