These Californians have invented life-saving drones that drop blood bags and medicine into remote areas. Are their Ziplines the future of healthcare in the developing world? Subscribe to History NOW for more: Watch more from the History Makers: Check out exclusive History NOW content: Website - Instagram - Facebook - Twitter - Google+ - History NOW is a collection of timely and relevant stories that can only be experienced, documented, and shared right now. History NOW features powerful videos from people capturing significant, transformative events from their unique first-person perspectives. From politics and sports to science and technology, these are the people making history now.