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TIL two 16-yr-old Canadian snowboarders went missing near a B.C. ski resort. A helicopter found them with only a bit of frostnip to their hands ; they had managed to build a shelter and make a fire fueled in part by homework one of the teens had in his backpack.

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vEA7 TIL there is a Royal Navy superstition that whistling on a ship can summon strong winds. Traditionally, the only person allowed to whistle is the ship’s cook, as it means he’s not eating the food.
vPw8B TIL negative differentiation, suggesting that negativity is conceptualized in a more elaborate and complex way than positivity. Studies show that negative vocabulary is more richly descriptive of the affective experience and there appear to be more terms to express negative feelings.
KOwL4 TIL the Greeks invented "Worry Beads" (kompoloi) as a tool to destress. While many cultures and faiths created beads for religious purposes (Catholic Rosaries or Buddhist Mala for example) these beads aren't related to a religious practice. Greeks carry and play with them to relax or fidget.
X0g66 TIL dominant males of the fish species Limia perugiae often become so preoccupied with fighting each other that the females end up mating with the subordinate males
a8NQM TIL that in 1966 an engineer with limited flying experience inadvertently took off in an English fighter jet after engaging the afterburner by mistake