› added 6 months ago

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TIL: USA has 10 times more retail space per capita compared to Germany

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N7Lk1 TIL the asteroids 2709 Sagan and 4970 Druyan, named after Carl Sagan and his wife Ann Druyan, are in perpetual “wedding ring orbit” around the Sun.
Lk6Ov TIL about the Pizza Principle. The price of a slice of NYC pizza matches the price of a ride on the NYC subway.
XEwrr TIL that The Great Pyramid of Giza is the only one of the 7 Wonders of the World still standing today. The other 6 have all been destroyed by earthquakes and other natural disasters.
pVBp TIL the dagger found in Tutankhamun’s tomb was made from iron from a meteorite
nxY TIL that HeLa, the oldest human cell line used in scientific research, is derived from cervical cancer cells of a patient in 1951 and is so self-persistent that it is considered by some to be its own species.