Physics Professor, James Kakalios, tells the story of how a mild-mannered physics professor became associated with Spider-Man and Superman and how comic books can teach physics at the inaugural X-STEM Symposium in Washington, D.C. on April 24, 2014. br br The X-STEM Symposium is sponsored by MedImmune and the Northrop Grumman Foundation and is a program of the USA Science & Engineering Festival. br br Lockheed Martin is the Founding and Presenting Host of the USA Science & Engineering Festival.