Govert, to the core of the earth

Science journalist Govert Schilling visits special locations around the world. He compares the Earth with other planets. Thousands of planets have been discovered in recent years, just in our own Milky Way Galaxy. Yet Earth seems to be the only one teeming with life. What makes our home planet so unique? How did the earth come into being? What does the interior look like? How do continental drift, mountain building and volcanism work?