Introduction of iodized salt in 1920s increased national IQ average by 3.5 points in a decade and in certain states which had high levels of iodine deficiency previously, saw avg IQ increase as much as 15 points within the first decade.
Roberto Solis was sentenced to life in prison in 1969 for murdering an armored truck driver. He became a successful poet in prison which led multiple well known writers to petition for his release. After he was released he robbed an armored truck for $3 million and is still on the run.
In 1930, Chandra, an Indian student showed mathematically that massive stars explode into a supernova and then collapse down into neutron stars,or black holes. Before that Scientists assumed that all stars collapsed into white dwarfs when they died. Chandra’s theory was ridiculed as ‘absurd’.
The way Americans speak pre-dates the way English speak. This is because “rhotic speech” spoken in America originally came from England, later the wealthy in order to be different adopted a soft “r”, “win-tuh” instead of “win-terr”. It was “posh” to sound like that so everyone else copied them.
A brain syndrome called mirrored touch synaesthesia causes people to physically feel what other people are feeling just by looking at them. For example, a person can look at a dog and fee fur texture on his palms, this is an involuntary response. Brain automatically fills in what it thinks the dog feels like without needing to touch it. Sometimes people also have mirror-taste, so they can look at something and “taste” it in their mouth.
Single men 18 to 55 only change their bed sheets an average of four times a year. Further, the average single guy owns just one set of sheets and can sweat up to a liter a night and sheds thousands of dead skin cells.
Key Limes were considered a weed until The Great Freeze of 1894–95 destroyed Florida’s lemon groves. Farmers replanted “Mexican” limes and they became known as “Florida Key Limes, a beloved regional crop”.
Japan converts footsteps into renewable energy in Tokyo train stations and use it to power billboards around the city, using special floor boards that turn vibration into energy.
Helen Keller was accepted to Harvard in 1900. Mark Twain introduced her to Standard Oil magnate, Henry Rogers, who paid for her education. And in 1904, she became the first deaf-blind person to earn a bachelor’s degree.
The inside of the Leaning Tower of Pisa is completely empty.