Material World: Hidden landscapes, Mythical monsters and Tibetan singing bowls.

This week, Quentin Cooper explores hidden landscapes under the ice of Antarctica and underwater volcanoes off its coast. He hears of a vast land that emerged from the North Atlantic, only to be lost again beneath the waves. He asks what the quest for mythical monsters can bring to human psychology and the study of rare species. And he hears the mathematical secrets of the Tibetan singing bowl.