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TIL The Axolotl can be forced to transform into its adult salamander form with an injection of iodine. It never becomes an fully mature salamander in the wild.

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P8LG TIL HIV infection can be prevented if antiretroviral drugs are taken within 72 hours after exposure. This is due to the length of time it takes the virus to infect and proliferate.
awGoy TIL that 2.5 billion people do not have access to toilets
XE1BD TIL of the Sack of Rome in 390 BC. After the Romans were routed and the city was all but destroyed, the Romans figured their only decision was to pay the invaders to leave. It worked.
o60E TIL Architect Christopher Alexander advocates building street cafes in each neighborhood. “Encourage local cafes to spring up in each neighborhood. Make them intimate places, with several rooms, open to a busy path, where people can sit with coffee or a drink and watch the world go by.”
nWpvY TIL that in 1928, Scottish scientist Alexander Fleming accidentally discovered penicillin when he noticed mold killing bacteria in his petri dish. This accidental finding marked the beginning of modern antibiotics, revolutionizing medicine and saving millions of lives.