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TIL that researchers have developed a wearable bioreactor that, with just 24 hours of use, can induce long-term limb regeneration in adult Xenopus laevis frogs. This treatment led to significant tissue regrowth and functional recovery over 18 months.

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kJPd TIL Battle of Longewala in 1972, a company of just 120 Indian soldiers defeated a 2000 strong force of Pakistani Army backed by 50 tanks. Only 2 Indian soldiers died while Pakistan lost 200 soldiers, 36 tanks and close to 100 Vehicles.
Wk8D4 TIL Humans have physiological adaptations related to the climate of their genetic origins. A study on Chilean Alacaluf Indians shows that they have a resting metabolic rate 150 to 200% higher than whites. South African Bantus have a lower sweat rate than that of acclimated whites.
ak7Z TIL that pioneer of astrogeology and founder of planetary science, Eugene Shoemaker, was a candidate for an Apollo moon mission but ruled out due to illness. After his death in 1997, he became the first person laid to rest on another celestial body, and the only human buried on the moon.
0dgRA TIL the ankle–brachial index is the ratio of the blood pressure at the ankle to the blood pressure in the upper arm. Measurements are taken when the person is lying down, face upwards on a table without the head or extremities dangling over the edges. It's used to check for peripheral artery disease
KYWow TIL that as late as 1997, the New York Stock Exchange still traded in increments of 1/8 of a US Dollar, a legacy of the old Spanish “pieces of eight” coins used in the colonial period