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TIL: When an electric eel senses prey/ a threat, it sends a signal through its nervous system to the electrocytes. Nerve fibres join each electrocyte on one of its sides. The arrival of a signal causes Na+ ions to flood into the cell. This flow gives rise to a discharge of electricity.

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XxoD TIL That the Pentagon has 2 times more bathrooms than needed because it was built during segregation.
yQjX8 TIL of the Humongous Fungus, which is currently the oldest known and largest living organism on the planet. It is the biggest mushroom in the world. It covers nearly 2400 acres of forest in Oregon and is believed to be anywhere from 2,400 years – 8,650 years old
9YOLM TIL that in the US the Rod of Asclepius, symbol of the deity associated with healing and medicine, is often confused with the staff of the god Hermes, the caduceus.
ZjvD TIL the Iraqi government spent $78m on bomb detectors that turned out to be glorified dowsing rods. The director of the UK-based company behind the devices was jailed for 10 years.
MVPa TIL that the word ACME commonly found in Looney Tunes shows stands for “A Company (that) Makes Everything”