Ecosystems & Habitats

At the southernmost tip of South Africa, where fresh and salt water collide, a tiny seahorse appears to levitate. Seahorses are the ocean’s slowest swimmers, but they have one of the world’s fastest muscle contractions, using it to suction up their prey. In this episode, we meander through eelgrass with a male Knysna seahorse as he twines tails with his partner, changes color to match the sand, and even gives birth to a brood of tiny seahorses.

Red pandas have thick bushy ringed tails like raccoons, but they aren’t related to panda bears or raccoons—in fact, they have no close relatives anywhere on Earth. In this episode, we wander the Himalayas with a red panda and her cubs as they munch on bamboo, practice walking in the treetops, and settle in to nap together as the first snowfall of the year covers their forest home.

California’s coast redwoods are Earth's tallest living beings, some reaching more than 350 feet high. They can also live for more than 2,000 years, outlasting entire civilizations. In this episode, we spend an evening with an ancient tree. Below ground, its roots tap into a forest-wide network; above ground, its branches harbor life in its many forms.

In the misty Puerto Rican El Yunque rainforest, coquí frogs no larger than your thumb fill the air with their distinctive two-note song: “co-quí, co-quí.” They alternate routines—one night singing to attract potential mates, the next hunting to fuel up for tomorrow’s performance. In this episode, we follow a singer and a hunter amid the vibrant nighttime chorus.

An awe-inspiring investigation into the hidden world of the deep sea—the most mysterious, unforgiving environment on Earth—whose secrets can radically revise our understanding of life itself and chart our planetary future. “A brilliant scientist and storyteller, Jeffrey Marlow takes us on...

More than a hundred salt lakes dot Earth's surface, most of them hidden away in remote desert valleys. But today nearly all of them are at risk of drying up. Their death is a harbinger of rising sea levels, life-threatening dust storms, and environmental collapse. Writer and geographer Caroline Tracey didn't know this when she began crossing paths with salt lakes during her early twenties. From the Great Salt Lake to the Aral Sea, across the American West and around the world, the unusual beauty of these shimmering, uncanny bodies of water captured her imagination.

Farley Mowat's youth was charmed and hilarious, and unbelievably free in its access to unspoiled nature through bird-banding expeditions and overnight outings in the dead of winter. The author writes of sleeping in haystacks for survival, and other adventures, with equal shares of Booth...

Knoxville native Charlie Tombras may be best known for his fifty-seven-year leadership of the nationally recognized advertising firm the Tombras Group, but in his moving memoir, From Out of the Smokies: Stories of Fly Fishing and Life, he chronicles his personal journey, letting business take a backseat.

Below the waves, the ocean remains a largely undiscovered realm, with only 25% of its features mapped in detail. What we know about its depths, we've learned with the help of deep-sea robots. World-renowned robotics expert James Bellingham introduces listeners to this compelling world of contemporary undersea exploration and the vital role autonomous robots play in corporate and governmental aquaculture management, climate data, energy source locations, shipwreck explorations, and much more.

Ancient and carbon-rich, old-growth forests play an irreplaceable role in the environment. Their complex ecosystems clean the air, purify the water, cool the planet, and teem with life. In a time of climate catastrophe, old-growth and other natural forests face existential threats caused by...