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We consider a planar geometric flow in which the normal velocity is a nonlocal variant of the curvature. The flow is not scaling invariant and in fact has different behaviors at different spatial scales, thus producing phenomena that are different with respect to both the classical mean curvature flow and the fractional mean curvature flow.  In particular, we give examples of neckpinch singularity formation, and we discuss convexity properties of the evolution.  We also take into account traveling waves for this geometric flow, showing that a new family of    C   1  ,  1and convex traveling sets arises in this setting.

On a Minkowski geometric flow in the plane: Evolution of curves with lack of scale invariance