SportsThe desire for riskTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoSports06/12/2016June 12, 2016More and more people are looking for kicks in extreme sports. What makes extreme athletes risk life and limb? One researcher has discovered that some people seem to be immune to the stress hormone.https://p.dw.com/p/1J4XlAdvertisement