Deep Time History is an original documentary series that was released on the video on demand service CuriosityStream, in partnership with production company Flight 33 Productions. The three-part series was included in CuriosityStream's January 2015 launch announcement. The three-part series is hosted by California State University Fullerton Associate Professor Jonathan Markley and exposes the secret drivers behind human history, revealing the sometimes unexpected answers to questions of how and why civilization as it is known exists today. It provides a look at how deep time has precipitated crucial events in human history. Each 50-minute episode dives into how physics, geology, biology and chemistry—forces as far back as the formation of the Earth—have influenced world history as much as human innovations, political decisions or battlefield victories. All three episodes were released in July 2016.