Hernández Uribe used computer models to study the formation of magmas, which is thought to hold clues to the origin of continents. Magma is the molten substance that, when it cools, forms rocks ...

A globe is a model of planet Earth, showing how it looks from space. This one shows all the countries of the world, almost 200, including the UK. It shows all seven continents, Europe, Africa ...

The Countries of the World, being a Popular Description of the Various Continents, Islands, Rivers, Seas, and Peoples of the Globe. By Robert Brown, &c. Vol. I. (London: Cassell, Petter ...