‘Don’t Look Up’ delivers a scathing satire that occasionally veers off course

In a grand science fiction tradition, "Don't Look Up" uses a disaster-movie framework as a metaphor for a reality-based crisis, with a huge comet hurtling toward Earth as a surrogate for indifference to addressing climate change. Yet this star-studded, extremely provocative satire at times veers off course itself, partially undermining its admirable qualities with the broadness of its tone.