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Available for over a year

The study of volcanoes and what they can tell us about our planet's formation. They are one of the most spectacular natural formations on earth but they can also tell us how the continents were formed and what is going deep inside the plant. They are also the most dangerous natural events on earth. This is a programme from the ÃÛÑ¿´«Ã½ World Service Archive and was originally broadcast in 1998.