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.
Chinese and EU researchers have built a model to evaluate the effects of different greenhouse gas (GHG) reduction policies on urban citizens' health and well-being