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TIL there’s an island in the pacific where many of the residents are completely color blind, only able to perceive black and white colors. However, they often take a psychedelic drug which allow them to perceive colored hallucinations.

Read more color-blindness.com

via reddit.com

eabn TIL the last cipher from the Zodiac Killer, a 340 character code sent to newspapers in 1969, remains unsolved.
6E5xm TIL in 1954 Israel tried to create a false flag attack in Egypt by planting bombs in Egyptian, American, and British civilian targets. Muslims were to be blamed in order to convince British troops to stay in the Suez canal. Israel denied any involvement before awarding the agents 51 years later.
gM6K7 TIL that after losing most of his hearing, Ludwig van Beethoven used bone conduction by placing one end of a rod in his mouth and resting the other end on the rim of his piano, which enabled him to hear music through vibrations in his jawbone.
wL1QE TIL NASA had a moon race scare when the Zond 5 crew capable spacecraft was sent around the moon (September 1968) and returned to Earth. Voices of 3 cosmonauts were heard from the spacecraft discussing telemetry and even a landing attempt. The craft had no crew and the transmission was faked.
J1QOQ TIL about the Derg, a Communist revolutionary group in Ethiopia responsible for abolishing the monarchy. The Derg are also responsible for wide spread famine during the 80s that started Live Aid (which fell into controversy as some of the NGOs were funneling money to Derg programs)