› added 10 months ago

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TIL that the Bald Eagle, long a symbol of the United States, was not officially proclaimed the National Bird until yesterday

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oR5dA TIL About a turbine bearing at Holtwood Hydroelectric Power Plant in Pennsylvania that has been running maintenance free for over 100 years and rated to continue operating for more than 1300 years without maintenance. Amazing thing is that it was Albert Kingsbury's first practical application.
W7Q9Y TIL: The US Navy used Xbox 360 controllers to operate the periscopes on submarines based on feedback from junior officers and sailors; the previous controls for the periscope were clunky and real heavy and cost about $38,000 compared to the Xbox 360 controller’s cost of around $20.
0rWN TIL Offenders convicted of murdering white females were more than 14 times more likely to be sentenced to death than were offenders convicted of murdering black males
xjl0 TIL The US Federal Reserve is privately owned
mxM TIL studies have shown that the achievement gap between blacks and whites on many standardized tests disappears when the subjects are told that the tests do not measure intelligence or IQ.