Renowned theoretical physicist Stephen Hawking hosts this five-part documentary series that explores the farthest reaches of human imagination, focusing on revolutionary inventions designed to modify everyday life on Earth. Stunning advances in "Machines," "Health," "Technology," "Environment," and "Biology" are reviewed, with appearances by David Attenborough, Richard Dawkins, Kathy Sykes, and Robert Winston adding intellectual heft to the proceedings. 3 3/4 hrs. total. Widescreen (Enhanced); Soundtrack: English Dolby Digital stereo; Subtitles: English (SDH); biographies.