Last week, Superman developed a new super-power. Sort of. This ability, which Batman calls "super-flare," is an extension of heat-vision, expelling the solar energy in Superman's body in one destructive blast, then leaving him powerless for about twenty-four hours. There have been several who have suggested that such a power is good because it is the key to making Superman more interesting and more human.
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What makes Superman such a goreat character if he doesn't face any real peril at all in his stories other than his golden heart? - Quora