The business world is always looking for that great new idea, but what if the next big thing was something as old as humanity? Great storytelling has been around for centuries, but prowess in that skill can propel growth in a company or brand, attract new talent and boost employee morale. Carmine Gallo tells this story in his new book,  The Storyteller’s Secret: From TED Speakers to Business Legends, Why Some Ideas Catch On and Others Don’t, on the Knowledge at Wharton show on Wharton Business Radio on SiriusXM channel 111 . An edited transcript of the conversation appears below. Knowledge at Wharton: What was it that got you started on this path? Carmine Gallo:  I’ve been studying communication for 25 years, and I was a journalist. I was a CNN journalist for quite a while. Today, I still write for Forbes and Entrepreneur , and a bunch of other outlets. And I’ve appeared at Wharton and Stanford and other business schools as well.…