Documentary. Originally produced as an episode of the television series: Nova. Program content: ©2016. Widescreen presentation; stereo. Running time indicated on container: approx. 60 minutes; actual running time: 54 minutes. TV Parental Guidelines rating: TV-G (most parents would find this program suitable for all ages). Director of photography, Jason Longo ; edited by Daniel Gaucher ; music, Christopher Rife. Narrator, Jan Maxwell ; commentators, Matt Walker, Jim McGaugh. In English with optional English subtitles.