› added 1 year ago

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TIL that infrasound can stealthly trouble your eyes and brain, making you perceive "ghosts".

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v1JR4 TIL one of the most well-known and robust hypotheses linking household income and ecology, the luxury effect, suggests that urban biodiversity, and plant diversity in particular, is positively correlated with neighborhood wealth. This is particularly pronounced in arid ecoregions and biomes.
4deg TIL the upside-down ketchup bottle earned its inventor 13 million dollars.
9wg87 TIL there is a "NATO" ETF, which invests in the defense industries of NATO members
GxLQ TIL the Han Dynasty in China was aware of the existence of the Roman Empire, calling them Daqin or “great Qin”. In 97 CE the Chinese attempted to send an envoy but he turned back after reaching a large “western sea”, discouraged by the long and perilous journey it would take to reach Rome itself.
KYj19 TIL that Victor Gruen who designed the first mall in the US, in later years hated what he created and even disowned it