The new film “Don’t Look Up” is a scathing satire about people’s response to climate change... except a comet-- hurtling towards Earth-- stands in for global warming. The writers of “Don’t Look Up,” including Denver journalist David Sirota, do not imagine this event brings humanity together. In the film, there’s widespread skepticism of the science; a tech mogul tries to make money off the whole thing; And TV anchors downplay the seriousness to keep their shows light and fluffy.