A rope of three climbers walk at 3400m on September 11, 2013 near the Dent du Géant (Giant's tooth), in the Mont Blanc massif in France and Italy. Jean-Pierre Clatot/AFP/Getty Images hide caption

itoggle caption Jean-Pierre Clatot/AFP/Getty Images

Push It

This week it's all about pushing it. From hunger strikers pushing their bodies to the limit, to musicians Calle 13, who have pushed beyond a jokester past to test new boundaries.