29:01
Physical Geography: Making Sense of Planet Earth - The Ever Changing Planet
About this title: Our planet is ever-changing. Earth's landforms are constantly being created and destroyed on timescales ranging from days to tens of millions of years. In this program Alec Murphy walks you through the forces shaping and destroying...
29:11
Physical Geography: Making Sense of Planet Earth - Layering the Planet
About this title: Geography has found that Earth is organized into a sequence of spheres: the inner core, the crust or lithosphere, a soil layer, known as the pedosphere, the hydrosphere, the atmosphere and biosphere. Alec Murphy shows how they are ...