This isn't one of Peter Sinclair's usual videos. Rather than taking on bad and scientifically illiterate denial points, it's kind of a primer on the history and breadth of scientific evidence. Rather than a rebuttal to the latest recycled talking point (this week, I think they're still on the "It's an U.N. plot" by way of the IPCC), it's kind of a rebuttal to the general notion, "This one thing proves global warming is a hoax," 'cause one thing makes no difference when you consider the overall body of supporting evidence ... not that self-professed "skeptics*" understand that.
*--A skeptic is someone who rejects the body of evidence as a whole, not someone who rejects the premise beforehand and then finds excuses to find the evidence unconvincing. Someone who does that is, in common parlance, a dumb ass.