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TIL that before respirators were invented, firefighters were required to grow a full beard. Before a fire, firefighters would soak their beards in water and clamped it in their teeth to act as filters, which would block the larger ashes.

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Meedm TIL the final speech by Gregory Peck in To Kill a Mockingbird was done in one take.
OGZb6 TIL that Jesse "The Body" Ventura was a bodyguard for both The Rolling Stones and Grateful Dead before he became a professional wrestler.
VMYxm TIL Benjamin Franklin raised his illegitimate son (mother never revealed), who assisted his father in the famous kite experiment. But William became the leader of the Loyalists in the Revolution. They never reconciled, meeting only briefly in Britain after the war to settle family legal matters.
VB0oQ TIL Town Line, New York seceded from the Union and joined the Confederacy.
5YBVk TIL that there is a collection of viruses in our bodies known as the virome. These viruses do not only infect us but they can also infect the bacteria(microbiome) in our bodies. The stable equilibrium of virus infecting the bacteria in our gut is believed to be why we are immune to certain viruses.