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TIL that Elmer Fridrich and Emmet Wiley developed the halogen lamp at General Electric in Nela Park, Ohio in 1955. Fridrich figured out that one had to use a small amount of iodine surrounding the tungsten filament, which would allow it to burn at elevated temperatures.

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Lk44d TIL Project X was going to have a sequel called Project XX, with Warner Bros. even announcing Project XX's release date (Aug 19, 2016). However, Warner Brothers never released further details and instead quietly skipped the release date.
W76m4 TIL South America is the only inhabited continent in the world without monarchies. All South American countries are presidential republics except Suriname (a parliamentary republic) and French Guiana (a French overseas department).
KOpNE TIL after the release of the film "It's a Wonderful Life", the FBI released a memo warning the American public of it's "communistic messages"
0dAAA TIL telomerase is a naturally forming enzyme that helps maintain the protective caps at the ends of chromosomes, thus preventing cells from dying. When mice were genetically engineered to produce 10 times the normal levels of telomerase, they lived 50% longer than normal mice.
BNGr TIL that this creature commonly called Waterbear can survive in outer space and vacuums. It’s resistant to extreme radiation, pressure, and temperatures. They can hibernate for a decade, and are found everywhere on earth from the Himalayas to the deep sea. No one has been able to classify them yet.