The video is called "How to talk to a climate change denier" and halfway Marshall explains that that term is best avoided in a productive conversation. Furthermore, it is not about the oddish "debate" in the blogosphere, it is about talking to someone you know about climate change. This is why I rename the video to "How to talk to uncle Bob, the climate ostrich". Marshall offers the term "climate dissenter", I personally like "ostrich", it fits to these people denying that climate change is a problem in a wide variety of (conflicting) ways.
The conversations with family and friends are probably the most important discussions, while you might have the tendency to avoid them. You are more likely to convince your uncle Bob as someone who build his internet identity around refuting that climate change is a problem.
Quotes from the video
Are you struggling to find ways of talking to people who simply do not believe that climate change is happening. ... Do I fight it out with them? ... You just laugh it out and let it go. Actually that conversation is really important. The fast majority of people form their views from the social interactions with people around them, with their peers.
Do not go into an argument, seek common ground. ... When you think of the times when you have been challenged. And someone has changed your views. Was that an argument that was won or lost? Did you ever at the end of a conversation with someone say: you know what, you were right all along, silly me, I was wrong all over, you are right.
Okay, I know it is hard to feel much respect for people that ...
They are forming their own views, they are expressing their own views. ... The easy option is to say. Climate change is a huge problem and then not to think about not, not to do anything about it. At least they are engaging. ... Let's respect that quality that they make up their own mind.
Hold your views
It is important that you own your views. Don't make it an argument about an "it". ... Don't seek to undermine their sources of information. That is another discussion about the "it". ... This is again going head to head about the "it".
People form their opinions over time, it is a steady process of negotiation. ... So it is important you tell them about the process how you came to your views.
There is no reason why climate change cannot be a matter of deep concern for conservative people, to traditional people, to old people. ... Try to find ways to talk about it in a way that it concerns about them.
People who do not believe in climate change nonetheless have very strong values in other areas. They are people who have very strong interest in their community, in their family, in a social life. They'd love to be quite traditional in the sense that they have a very strong sense of identity. ... These are values to speak to.