› added 7 years ago

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TIL the USA annually uses more electricity on air conditioning than every African country combined uses on everything.

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NEY1 TIL the stock market got the names “bear and bull” because of caballeros in California. The caballeros put California grizzlies in battle with bulls. They observed bears swiped downward and bulls hooked upward, thus lending the analogy. This also helped lead to the California grizzly’s extinction.
N75dM TIL the reason you should contact a doctor if your erection lasts longer than four hours is that the blood is not circulating meaning that the cells are not receiving oxygen. The longer an erection is maintained, the greater the risk of permanent scarring of the penile tissue due to cell death.
j6Lnp TIL Aristotle hypothesized that nature contains no vacuums because the denser surrounding material continuum would immediately fill the rarity of an incipient void. The hypothesis was termed horror vacui (Latin: horror of the vacuum) or plenism— commonly stated as "nature abhors a vacuum".
neNG9 TIL scientists created a Transparent aluminium-like material as shown in Star Trek IV: The Voyage Home. It is a hard, glass-like magnesium aluminate that has visible and IR transmission. Military applications include lightweight bullet proof glass, armor and lasers.
bJmN TIL Nearly all profits from Hitlers “Mein Kampf”, his image and his artwork go to charity. Bavaria owns the rights and sometimes has difficulty finding a charity to accept them, as they are widely considered “blood money”.