Big ResponsibilitiesTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video10/18/2013October 18, 2013At the tender age of 30, engineer Kathrin Marx is in charge of some of the largest construction projects in the southwestern German city of Mainz. She says she's not cowed by highway bridges, church steeples or chemical plants.https://p.dw.com/p/1A1l6Advertisement