
⦓ I had intended to look at human history, but thanks to Wikipedia's random button, I am instead looking at hemoglobins. It is truly fascinating to me to know that human blood is not always the same colour! Even within a single body! Their blood colour depends on factors like oxygen content and body health, and can range from red to brown to a dark purple. Speaking of oxygen content, did you know that Earth ﴾or at least whichever one this Wikipedia exists in﴿ has a lower oxygen content than Alternia? Both trolls and humans can survive just fine in the oxygen contents of the other planets, but a troll on Earth may find themselves a little weaker than usual and occasionally slightly short of breath, while a human on Alternia may experience occasional bouts of mild euphoria or mania in some of the most oxygen-rich areas of Alternia. Isn't that fascinating? ⦔
