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When humans see purple, we’re really seeing a blend of red and blue light. Hummingbirds see purple plus ultraviolet—and lots of other nonspectral colors. A new study found that the birds could see every nonspectral color that the researchers threw at them.

Read more arstechnica.com

o9J8 TIL that only 5% of all the slaves from the Atlantic Slave Trade came to the USA. Most went to S. America and the Caribbean.
e0J4D TIL 12-year-old Ralph (Peter Billingsley) from 'A Christmas Story' was given real chewing tobacco on set and got sick.
e04M5 TIL that the restaurant chain Red Lobster once lost over $3 million during an "endless crab" promotion because an executive underestimated how much people could eat.
wLXYo TIL In 1895 an Irish man killed his wife because he thought she was a Changeling whom fairies had swapped with his real wife.
b96dQ TIL in a 1988 episode of "Alvin and the Chipmunks" called "The Wall", the Chipmunks play a concert at the Berlin Wall and see it crumbling down, only to awaken from a dream and say, "It was just a dream, but it doesn't have to be." 11 months later, the Berlin Wall came down in real life.