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TIL that US tick populations have exploded in the past 15 years, causing a surge in often misdiagnosed tick-borne diseases. One expert said, "If people could see what I'm seeing, they would never go outside."

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neX9W TIL that each cat species can either purr or roar, but no species can do both.
nAJr TIL the human brain remains half awake when sleeping in a new environment for the first time.
vP8vB TIL all humans share a common ancestor called "Mitochondrial Eve," who lived around 150,000-200,000 years ago in Africa. She is the most recent woman from whom all living humans today descend through their mother's side. Her mitochondrial DNA lineage is the only one to persist to modern times.
jNeBN TIL of a 2014 lawsuit against Canon over a printer error code that would appear shortly after the warranty expired, which they settled out of court after agreeing to extend the warranty to anyone experiencing this code. The issue still exists in their new printers, under a different error code.
4vQ5 TIL in the early nineteenth century, the United States had a hundred and forty-four separate time zones