"Don't Look Up," an apocalyptic comedy
Can you play an existential crisis for laughs? Correspondent Tracy Smith talks with stars Meryl Streep and Leonardo DiCaprio, and with writer-director Adam McKay (an Oscar-winner for "The Big Short"), about "Don't Look Up," a satire about Earth's impending collision with a comet that offers a comical analogy to climate change – and mankind's reluctance to deal with it.