With its power of expansion and its extraordinary capacity to preserve life, arrest decay and even carve the landscape, the story of ice is one that can be told at a vast range of scales - from the refreshing cube in your drink to the fleeting crystalline beauty of a snowflake in your palm, to multi-million ton glaciers and the ice fountains of far-flung moons. Science writer and broadcaster Dr Gabrielle Walker goes on a journey to discover the extraordinary qualities of ice and the enormous influence it has had on our planet. Gabrielle has been obsessed with ice ever since she first set foot on Arctic sea ice. In this programme she searches out some of the secrets hidden deep within the ice crystal, to try to discover how something so ephemeral has the power to sculpt landscapes, to preserve our past and inform our future.
