Landmines are one of the more controversial weapons of war. Hidden from sight, they maim and kill and remain long after conflicts end. According to the United Nations, 110 million active landmines are scattered over 70 countries. For five decades, Colombia has been plagued by insurgencies and countless, planted landmines. But, as Arash Arabasadi reports, one company there may have found a way to defeat the explosives our eyes can’t see.