08/07/2017 03:40:46 PMBreaking the two-hour marathon mark is a magical, athletic milestone that has fascinated the running world for years but has never been accomplished. Now, a team of researchers from the University of Houston and the University of Colorado Boulder has laid out a series of mathematical calculations showing about four and a half minutes could be shaved off the current world record by using lighter shoes, a collaborative drafting strategy and ideal course.Arts & Humanities