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TIL Actor Josh Hutcherson and R&B Singer Tinashe were used as motion-capture models for the 2004 film The Polar Express. Both of their characters did not have names, but were rather called “Hero Girl” and “Hero Boy”.

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YpW4Z TIL the Marshallese used map charts made of sticks to navigate the Marshall Islands in canoe. They displayed the major ocean swell patterns and how the islands disrupted them. The charts are only interpretable by their makers who would memorize them before their voyages. They were used up until WW2.
WEpN TIL If we extract all the gold out of the ocean, there would be enough for everyone to have 9 pounds of gold
0wM5y TIL that tennis balls are green/yellow because they were the easiest for viewers at home to see on their colour TVs. Before that, they were white
BXpr TIL that ironically, Reading Rainbow was actually canceled BECAUSE of No Child Left Behind.
deN8 TIL some Arctic caterpillars can’t eat enough during summer to sustain transformation so they winter over frozen solid, protected by their blood’s antifreeze properties. It may take 14yrs before they build enough reserve to transform. These are the oldest caterpillars in the world.