› added 6 years ago

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TIL The United States has been in a state of national emergency ever since September 14, 2001

Read more federalregister.gov

via reddit.com

6ElEQ TIL the 13-star American flag attributed to Betsy Ross was just one of many designs that fit the Continental Congress’ resolution that the flag have “thirteen stripes, alternate red and white; that the union be thirteen stars, white in a blue field”
69e7Q TIL Lemons float, but limes sink
OoBJL TIL that when parents view failure as debilitating and focus on their children’s performance rather on learning, their children tend to believe that intelligence is a fixed characteristic, rather than something malleable that they can improve.
Egd6W TIL cicada wings shed water, dirt, and bacteria and are anti-reflective to avoid detection by predators using nanopillars 4000x thinner than human hair and waxy substances
Z5LB TIL Melatonin levels secreted in breast milk vary depending on the time of day, helping a baby know when to sleep/wake up and thus regulate its sleep cycle. Babies who are fed formula have a harder time regulating their sleep cycle and are more prone to colic