Right now, as you listen to this, your larynx is trying to kill you. This isn't metaphorical. Your voice box sits dangerously low in your throat, creating an intersection where food and air must cross paths every time you swallow. No other mammal has this problem. Horses can drink and breathe simultaneously. Newborn humans can nurse and breathe at the same time. But somewhere between three and six months old, your larynx descended, and you joined the only species on Earth that regularly dies from eating dinner.