Richard Hammond's Invisible Worlds(Blu-ray)

All three episodes of the BBC science and nature mini-series presented by Richard Hammond. Using state-of-the-art imaging technologies, the series examines the extent to which the things we cannot see shape our lives. From spectacular natural phenomena such as vast, super-fast lightning clusters, to wonders of the living world such as the hidden aerodynamics of bats, the hidden secrets of the invisible world around us are revealed and explored.