Marek, a 17-year-old unaccompanied migrant from Armenia, clasps nervously at the holds at a Paris climbing wall, then overcomes ... before coming to a stop, hanging at the end of the rope.

Marek, a 17-year-old unaccompanied migrant from Armenia, clasps nervously at the holds at a Paris climbing wall, then overcomes his fear and ... only drops a short distance before coming to a stop, ...