STUDIO GUESTS: Joseph and Laralyn RiverWind. Natures Edge, explores a wide range of topics that aim to immerse the listener in the wonder, surprise and importance that nature has to offer. Dale Stewart is known worldwide as a naturalist, explorer, adventurist, and conservationist. He is also a published author and speaker, who still seeks that next great challenge. He has devoted much of his life to exploring the planet’s remotest rivers and living with and learning from indigenous people along the way.