Humans are the only creatures on Earth that can choke on their own food. Yes, that’s right. Because we have funky plumbing. There’s a crucial split in our throats – one path that leads to the esophagus and the stomach, and another that leads to our larynx, or voice box. Why would humans have evolved such potentially fatal architecture? Some experts say the reason is speech, suggesting speech might pre-date Homo sapiens, going back to Neanderthals, or even Homo erectus, our likely ancestors from millions of years ago. This is all theoretical of course. There are no million-year-old recordings. But some of these ideas are gaining steam. This week on the podcast, reporter Ari Daniel from our partner program NOVA explores several theories about where language comes from.