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TIL about "Mean World Syndrome" in which people who are exposed to excessive violent content in mass media, particularly TV news coverage, believe the world is much more violent than it actually is.

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w64M TIL There has been a very real problem in Northern Canada for decades. Native hitchhikers, mostly women, tend to go missing without explanation along a 800km stretch of road known as the Highway of Tears. Many think it is caused predominantly by 1-2 unknown serial killers.
kOm7B TIL that 63 years after its launch on March 17, 1958, Vanguard 1 is the oldest satellite still orbiting Earth. Weighing only 3.2 pounds and with a diameter of 6.5 inches, Soviet Premier, Nikita Khrushchev, derided it as "the grapefruit satellite".
D1XNV TIL that sloths do not fart. They reabsorb the gas into their blood and let one rip through their mouths. They also use the trapped gas to float on water.
wLkL7 TIL there was a plan in the 1920s/30s to dam the Mediterranean Sea, create a series of hydroelectric dams, lower sea levels and make North Africa more fertile. It was imagined by a German who wanted to avoid another world war for resources, land and energy by providing plentiful resources for Europe
rDK0 TIL that Blue whales are so enormous that a human being could swim through their largest veins and arteries.