 On the next Maine Calling, all about extreme sports, part of our Passions and Pastimes series. I'm Cindy Hahn. Certain sports attract thrill-seekers and hardcore athletes. We'll learn about some of the different extreme sports, from freediving to paragliding to whitewater kayaking. What do they entail? How do people get involved? And how dangerous are they? Maine Calling, Friday, live at 11 and rebroadcast at 7 on Maine Public Radio.