National Geographic Death Valley (2009)
From the first words this DVD grabs you, unlike many educational films. It speaks of sand dunes that hum/sing, rocks that move and leave trails, creatures that glow in the dark. For much of the film I found my myself open mouthed at the extremes of what and how the living things exist in this park where the temperature has reached 134 degrees - the hottest ever recorded in the US. There are several basic areas that are covered here on the last days of the park super indent's tour - the plants that might only live for a few weeks in a year or more, the animals that sometimes need no drinking water at all.