Using spectacular footage to take a multifaceted look at our world, this disc includes Amazing Earth, which ranges from the lava fields of Hawaii to the peak of Everest in its examination of the forces that shape the planet. In What Lies Below, cave explorers investigate the miles of mysterious, unmapped caves beneath our feet. Earth 2100: Wild Weather Ahead uses CGI footage to depict the potential environmental crises of the future, while Earth: The Sequel offers good news from the green energy revolution, with profiles of inventors and entrepreneurs committed to making a difference.