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TIL that almost any parent-child combination of eye colors can occur. The genetics of eye colour are complex and has moved on from the original thought that eye colour was determined by a single gene, with brown being dominant and blue recessive.

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BBkD TIL a 1945 issue of IMPACT magazine showed what the firebombing of Japan would have looked like if equivalent American cities were bombed.
VBjkm TIL that hummingbirds are the only birds capable of flying backwards! Their wing structure allows them to hover in place and move any direction, making them incredibly agile fliers. They also undertake remarkable migrations, flying ~500 miles nonstop across the Gulf of Mexico in a season.
x97B TIL Clarence Nash, the voice of Donald Duck for 50 years, voiced Donald’s voice in all foreign languages the Disney shorts were translated to (with the aid of the phonetic alphabet), in order to keep Donald’s voice consistent throughout the world
MeNKb TIL that the passenger trains between the german city Puttgarden and danish city Rødby take the ferry to get from one side to the other
OonkX TIL that even though the wheel is often citied as man's original invention... it wasn't invented until after flutes, baskets, woven cloth, and even boats