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TIL Supreme Court Justice Ruth Bader Ginsburg has trained with a former Special Forces Army reservist twice a week since 1999 after being diagnosed with colon cancer. She was able to complete 20 full push-ups in a session before her 80th birthday.

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7rgp7 TIL an Australian man was working as a hairdresser when he had the idea to make 3D printed prosthetic limbs from recycled shampoo and conditioner bottles. Working with 38 salons in Queensland, he is now testing the limbs with two children who had no access to practical and inexpensive prosthetics.
PrNE TIL that Italy opened a casino during WW1 to get information from foreign diplomats while they relaxed. Today the Casino di Campione is one of Europe’s largest; its revenue makes the local area a tax-free zone.
D1mQD TIL flypaper used to be made with metallic arsenic, which some people would soak in water to extract the poison. Fly paper had been used in several murder cases.
m1ZJM TIL that the Marquis of Queensbury once told Oscar Wilde "If I catch you and my son again in any public restaurant I will thrash you". Wilde responded: "I don't know what the Queensberry rules are, but the Oscar Wilde rule is to shoot on sight".
x6bdk TIL that evidence for the effectiveness of dental floss is limited. Several academic reviews have concluded either that flossing is no more effective than tooth brushing alone, or that the evidence in favor of flossing is weak, biased or of low certainty.