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.
How water interacts with different elements around it, such as soil, ice and structures, can reveal much about evolving climate patterns and help find ways to address global warming.