Avsnitt 4

In this episode, the BBC nature documentary based on the series "A Perfect Planet" focuses on volcanoes. We'll see how their activity has played a crucial role in Earth's history, in the creation of the oceans, the formation of the atmosphere, and the evolution of climate and life. Eighty years after their first sensational discovery, excavations are revealing Neanderthal man. With Alberto Angela, we'll uncover new insights into our origins . Where does the water we drink come from? Marco Visalberghi takes us on a discovery of the mysterious Oliero springs, a complex of caves among the largest in Europe! A precious underground water reserve.