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TIL that ants will refuse “medical” help from their colony if they know they are mortally wounded. Rather than waste the colony’s resources and energy on futile rehabilitation, the wounded ant flails its legs, forcing help to abandon them.

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erm4 TIL That more than half of the Western United States is owned by the Federal Government.
grZEb TIL IBM made the punch card systems the Nazi’s used to catalog people who were sent to the camps. Anyone who had a number tattoo was most likely assigned it from an IBM punch card system.
b6MN4 TIL learned that in 2003, Virginia Tech built a 'self-made' super computer (ranked #3 on the Nov 2003 TOP500 list) by using 1,100 Apple Power Mac G5 computers. It was named System X, from the Max OS X operating system.
lo4lG TIL that watching a fire can lower your blood pressure
OGBMg TIL Walking your dog makes the whole neighborhood safer.