I advance that I'm not a mathematician but I'm an undergraduate student of mathematics. In my courses at university I have studied a bit of Differential Geometry, in particoular differential geometry of curves and surfaces (in $\mathbb{R}^n$). I know that there are many research topics about manifolds, Lie groups atc. My question is the following:
In our days what are the most important research topics about curves and surfaces (in $\mathbb{R}^n$)?