We're borrowing an episode from one of our all-time favourite shows: Threshold, a Peabody Award-winning documentary podcast about our place in the natural world.

Now in their 5th Season, "Hark", Threshold producer Amy Martin is exploring sound itself: investigating what it means to listen to the nonhuman voices on our planet — and the cost if we don’t. With mounting social and ecological crises, what happens when we tune into the life all around us?

Other episodes from Hark cover the sounds of the primordial microbial ooze, of insects, of fish, and of plants. Today, we're featuring episode 3: on the sounds of coral reefs, and how listening to them may help them survive a warming world.

Find Threshold (and the rest of Hark) wherever you get podcasts, or at thresholdpodcast.org