Homo sapiens joined the story of life on Earth just 300,00 years ago. So when and how did we start making music and creating languages? In this episode, we explore these signature sounds and discover how they just might be rooted in listening. Threshold is nonprofit, listener-supported, and independently produced. You can support Threshold by donating today . To stay connected, sign up for our newsletter . Mentioned in this episode: Giving Tuesday To continue making Threshold and sharing it with audiences for free, we need to raise $75,000 by the end of the year. Thanks to your support, we are 80% of the way there! If you haven’t chipped in yet, please consider supporting our work by donating today. Threshold needs your help. To keep making this work and sharing it with audiences for free, we have to raise $75,000 by the end of the year — and we’re almost 50% of the way there! Donate today and your gift up to $1,000 will be doubled.