Is Leaping Tall Buildings in a Single Bound Possible?
Description:Experts may have all the answers, but let's face it: kids have all the best questions. Today, with the release of 'Man of Steel,' Dane (7) and Von (9) Mills wonder how Superman manages to be so super. Do his powers defy the laws of physics? Physics Professor Jim Kakalios joins HuffPost Live to enlighten us.(3:22)