The 3D RadioActivity number 303 is brought to you by a standard unit of measurement. The mile is an English unit of length equal to 1,760 yards (1,610 m) and standardized as exactly 1,609.344 metres by international agreement in 1959. The Roman mile consisted of a thousand paces of two steps each, so they divided their mile into 5,000 feet but the greater importance of … [Read more...] about 3D RadioActive Miles