› added 9 months ago

37

TIL that scorpions can hold their breath for up to six days underwater, while dolphins can hold their breath for up to 15 minutes:

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nXd TIL that humans can reliably identify, by smell, blood relatives - but not husbands or wives. Preadolescent children can detect their full siblings but not half-siblings or step-siblings.
VMNyG TIL We're taller in the morning than in the evening due to gravity compressing the cartilage in our spines when we stand up , sit , etc.
wLAkE TIL the first rocket to make it to space was the German V2 rocket MW 18014 launched on 20 June 1944 and reached an apogee of 176 kilometers or 109.6 miles. The rocket didn't have enough velocity to orbit causing it to return to Earth.
JrLv TIL That Russia gave us a 09/11 memorial in the form of a tear drop, that has received almost no media attention
PYRMV TIL an authentic smile is called a "Duchenne Smile". It happens when the zygomaticus major muscle lifts the corners of your mouth at the same time the orbicularis oculi muscles lift your cheeks and crinkle your eyes at the corners.