A mirror of tomorrow, Alfonso Cuar n's visionary Children of Men (2006) was released to good reviews and poor box office but is now regarded by many as a twenty-first-century masterpiece. Its propulsive story dramatizes a dystopian future when an infertile humanity hurtles toward extinction and an African refugee holds the key to its survival. Cuar n creates a documentary of the near future when Britain's totalitarian government hunts down...