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This blood delivery drone is saving lives. Silicon Valley startup Zipline wants to change the way medical supplies are delivered. 95% of roads in Africa wash out every year. This makes it difficult for medical supply delivery in developing countries. Zipline's drone can fly the supplies from hubs to clinics and hospitals. They are already being used in Rwanda. 

Health workers can order their supplies via text. Most often, blood bags are needed. Each supply box can hold up to three pounds. The drones shoot up into the air. They fly autonomously but can be controlled manually at any time. The supplies get dropped via parachute. 

Zipline has delivered 2,600 units of blood in Rwanda. The company is planning on expanding their system to other countries. 

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