The truth about superpowers . . . science fact or science fiction? Superman, Batman, The X-Men, Flash, Spider Man . . . they protect us from evildoers, defend truth and justice, and, occasionally, save our planet from certain doom. Yet, how much do we understand about their powers? In this engaging yet serious work, Lois Gresh and Robert Weinberg attempt to answer that question once and for all. From X-ray vision to psychokinesis, invisibility...