Not all fonts have the letter M in them (for example Chinese), but all fonts have a height. The term has therefore come to mean the height of the font - not the width of the letter M. In CSS, the em unit is a general unit for measuring lenghts, for example page margins and padding around elements.
Boston University's largest study abroad program is located in London, England. Boston University London Programmes offers a semester of study and work in London through their London Internship Program (LIP), as well as a number of other specialized programs.
The University of Colorado Boulder (commonly referred to as  CU or Colorado) is a public research university located in Boulder, Colorado, United States. It is the flagship university of the University of Colorado system and was founded five months before Colorado was admitted to the Union in 1876.