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TIL That there was an experiment where three schizophrenics claiming to be Jesus were brought together to see how they reacted with each other. They each eventually explained the other two as being mental patients in a hospital, or dead and being operated by machines.

M7Jaa TIL Mt. Vesuvius is still active, having had 4-6 relatively severe eruptions every century for the past 500 years (last one in 1944). It's also the world's most densely populated volcanic region, with 3 million people living nearby.
wLJa6 TIL Iron is an essential element for blood production. About 70 percent of your body's iron is found in the red blood cells of your blood called hemoglobin and in muscle cells called myoglobin. Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues.
M7YyW TIL that although equiped with parachutes while on air ambulance missions during WWII, the Flying Nightingales of the WAAF were instructed not to bail out and stay with the patients if their plane was shot down so that they would be on hand to provide medical support should anyone survive the crash
KO9NG TIL In 1955, Burma-Shave ran a promotion for a free trip to Mars if someone sent in 900 empty bottles of their product. It was intended to be a joke, but when a man from Wisconsin duly sent in 900 bottles, they scrambled to honour the promotion; sending him to Moers, Germany.
gVAX TIL the world’s longest burning light bulb was installed in 1901 and has been glowing for over 110 years straight. It has a carbon filament that is eight times thicker than a contemporary bulb.