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TIL that Carl Sagan lived in an Egyptian Revival home called The Sphinx Head Tomb in Ithaca, NY

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logbr TIL that in the international standard for paper size (used everywhere except the USA and some Latin American countries), the aspect ratio is always √2:1, so that when cut in half, the halves also have the same aspect ratio. In the "A" series (including A4), A0 is 1 m², A1 is 0.5 m², and so on
rNLkx TIL in 1893, large calaverite deposits were found in Kalgoorlie Australia, but was believed to be akin to fool's gold. It was used for town construction. In 1896 it was realized that calaverite contained actual gold, so nearly all structures created in the prior 3 years was demolished for its gold.
VlAD TIL only 8 percent of sales of Pink NFL merchandise goes towards Breast Cancer Research.
R5vJa TIL that during WWII the German army developed an amphibious automobile called the Volkswagen Schwimmwagen. It had a top speed of 50MPH and 4 wheel drive only in first gear. Of the 15,000+ Schwimmwagens, only 186 are still around and are sought after by VW enthusiasts.
edLk TIL that T-Mobile collects the web pages you visit on your T-Mobile phone, even if you are using WiFi and not their network.