A fun little video from science writer and YouTuber Kyle Hill

... going through a recent study from JPL that takes a serious look at the unserious idea of terraforming Mars. At the risk of a spoiler, the conclusion is not encouraging.While everyone reading this probably already knew how this was going to come out, it's worth walking through the numbers to get some sense of the full absurdity of what Elon Musk and his fellow travelers have been spouting on this.One particularly silly point that the video doesn't really dig into is Musk's fondness for framing Martian colonization in terms of a Plan B, a place that humanity can go if Earth becomes uninhabitable. The standard hypothetical here would be an asteroid strike or some other disaster. The problem with that idea is that, despite all sorts of cataclysmic events, Earth has been more habitable than current-day Mars for 3 billion or so years, and it's difficult to come up with a scenario that would change that.Though it's a rather silly exercise, if you were really concerned with humanity…