Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text. The English language draws a terminological distinction (not all languages do) between translating (a written text) and interpreting (oral or sign-language communication between users of different languages); under this distinction, translation can begin only after the appearance of writing within a language community.
Geological processes ranging from microscopic to global shape the Earth's surface. EU-funded researchers attempted to answer the question: 'What can we learn about metamorphism through the study of minerals in mountain belts?'