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TIL There is a municipality in Brazil called Altamira whose total area is twice the size of the whole of Austria and four times the size of Switzerland

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rRkAx TIL Spiders can sense electrical currents in the air and use them to launch themselves upward, traveling up to hundreds of miles. Occasionally a “mass ballooning” occurs, where so many spiders descend from the sky it looks like snow
b9nMZ Today I learned that a backlight behind your TV can improve the the quality of the image and reduce eye strain.
JYV91 TIL that Seattle's Sound Transit renamed its proposed "Red Line" rail because the name evoked "redlining," the historic practice of denying mortgage loans to poor, mostly minority, neighborhoods, which further impoverished them.
awwG0 TIL Singapore is the largest importer of sand world-wide and the world’s highest per capita consumer of sand at 5.4 tonnes per inhabitant
LwBd TIL that the largest cavalry charge in history occurred during the 1684 Turkish siege of Vienna. 18,000 Holy league Polish and German knights charged the Ottoman line, completely routeing them. The battle marked the end of Turkish expansion into Europe.