It's always an awkward exchange when you encounter someone, especially a relative, that doesn't believe in climate change. As an avid SCUBA diver, I have seen first hand the effect of even just a few years of higher ocean temperatues on a reef system. There are countless books, documentaries, full length movies and podcasts all on the topic, and yet when I am confronted by a "disbeliever", I don't quite know what to say. How can I help explain the situation without coming off as condescending, or totally losing my own cool?