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First broadcast in 1998. How the earth was formed

First broadcast in 1998. What volcanoes can tell us about our planet's formation

First broadcast in 1998. The origins of the earth and the elements that it's made from

First broadcast in 1998. Ccalculating the Earth's age and key moments in its history

First broadcast in 1998. Continents formed from molten rock - but what about water?

First broadcast in 1998. Why what are now mountains may once have been under the sea

First broadcast in 1998. How water made life on earth possible.

First broadcast in 1999. How and why did life on earth finally emerge?

First broadcast in 1999. What do earthquakes tell us about our planet?

First broadcast in 1999. Modern man has been on the earth for just 100,000 years

First broadcast in 1999. Can humans conserve the earth for future generations?

First broadcast in 1999. What are oil and gas and where are they found?