These brothers built a mine-sweeping drone

To clear land mines without casualties Courtesy of the Hassani brothers Brothers' Sweeper Brothers Massoud (on the right) and Mahmud (on the left) Hassani test out a Mine Kafon Drone Brothers Massoud and Mahmud Hassani grew up in Kabul, Afghanistan, knowing that one wrong step could end their lives. “When we walked to school, we had…