discarded
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TIL In 1974 at a Canadian army training base in Quebec, cadets were being trained to handle discarded explosives. A cadet asked one of the instructors if he could pull the pin on the grenade, and the instructor told him it was safe. It exploded, killing 6 cadets and injuring 65 others.
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whatilearned
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TIL about archeological Tells. Neolithic human settlement sites that grew into large (some over 100 feet tall) hills due to the people there discarding remains into the ground below, building on top of discarded buildings, and the collection of sediment/materials from everyday living.
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whatilearned
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TIL Anti-littering legislation date back to ancient Greece, a marker on the island of Paros has the inscription “whoever drops their litter on the street owes 51 drachmae to whoever wishes to claim them”. In modernity cigarette butts are the most littered item, with 4.5 trillion discarded each year.
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whatilearned
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TIL that Hydrilla was introduced to America in the 1950’s from someone who discarded a used aquarium containing the plant into waters near Tampa Bay, FL. It is now one of the most invasive marine plant species in the Western hemisphere and notoriously difficult to eradicate much less manage.
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whatilearned