In the 1960s, a new breed of superhero emerges in pages of Marvel Comics, inspired by the age of atomic energy and space travel and, in turn, inspiring the pop culture and pop artists of the time. Spider-Man, the Hulk and others are the first to have "problems" with which an adult audience can identify, and contemporary social issues make their way into comic books. Black powerhouses such as the Black Panther and Luke Cage appear on the scene, and the pages of "Green Lantern/Green Arrow" explode with relevant storylines as comic books are forced to confront the reality of an increasingly complex world.