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TIL why Roman concrete was and is so strong!
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TIL of the first English teacher in Japan — Ranald MacDonald. A bank clerk turned sailor, he taught 14 samurai English while he was held as prisoner.
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TIL that Christopher Nolan’s Interstellar is the only film in the top 10 worldwide box office this year that is wholly original (not a reboot, remake, sequel, or part of a franchise)
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TIL that since 1977 Nikon every year holds a photomicrography competition. Here are all the winners and honorable mentions!
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TIL In 2007, Odyssey Moon was the first team to register for the Lunar X Prize competition, an event that hopes to rekindle the efforts of humans to return to the moon. The team's goals were to build and deploy a robotic lunar lander
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TIL about Homegrown National Park, an effort to plant all unpaved and unfarmed land in America, from window boxes to yards, with native plants to support the entire food chain.