Experts say over the next hundred years the "perfect storm" of population growth, resource depletion and climate change could converge with catastrophic results. The scenarios in Earth 2100 are not a prediction of what will happen but rather a warning about what might happen.

A behind-the-scenes look at "Frozen" (2013), the Academy Award winner for Best Animated Feature, includes interviews with voice-cast members Kristen Bell and Idina Menzel and the creative team who adapted Hans Christian Andersen's story "The Snow Queen"; and visits to the actual villages and landscapes that inspired the fictional kingdom of Arendelle. Also: "Frozen" characters on "Once Upon a Time"; a preview of "Big Hero 6."