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TIL: Russia made us a 9/11 monument that few know about

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via reddit.com

geZA TIL that Russian cockroaches are leaving big cities and no one knows why
6R1w TIL an astronaut threw a boomerang while in a space station and it returned to him. As long as there is air to provide the necessary forces, a boomerang will return to its thrower, even in the weightlessness of Earth’s orbit.
nW5Mr TIL that the planet's average temperature compared to today was just 6°C (43°F) lower, during the last ice age, and 4°C (39°F) higher, during the age of the dinosaurs. "In climate terms, a change of just a few degrees is a big deal." (Bill Gates, 2021)
Browy TIL that Kaliningrad situated between Poland and Lithuania is the largest city and the administrative centre of Kaliningrad Oblast (Russia), Having its own Flag and a population of 475,056. Home to 9K720 Iskander (SRBM) and the Baltic fleet.
R5777 TIL that Salami Slicing or ‘Penny Shaving’ as seen in ‘Hackers’ (1995) and ‘Office Space’ (1999) is a legit fraud technique seen in the real world.