Trace humankind's long journey from hunter-gatherer to dominant global species. From the perspective of space, this two-hour special uses mind-boggling data and CGI to disclose the breathtaking extent of humanity's influence, revealing how we've transformed our planet and produced an interconnected world of extraordinary complexity. A trip through 12,000 years of development, the documentary shows how seemingly small flashes of innovation - innovations that touch all of us in ways unimaginable to our ancestors - have changed the course of civilization. As our global population soars, the program considers the challenges humanity will face in order to survive.