Humans are born into a wondrous planetary chorus. But today, many of us rarely hear anything other than ourselves. In this season of Threshold, we explore a world teeming with sound and ask what happens when we tune into the life all around us. Season 5 of Threshold, Hark, is coming Tuesday, November 19th. Threshold is nonprofit, listener-supported, and independently produced. You can support Threshold by donating today. To stay connected, sign up for our newsletter.