In isolated areas of Rwanda, drones are delivering life-saving blood 8x faster than past methods. A Silicon Valley startup is partnering with Rwanda’s government to serve 12 hospitals and 500,000 people. Via WhatsApp, a doctor in need simply messages the company, Zipline, and the drone is soon launched. Texts along the journey keep doctors informed, and the system requires hospitals to keep less blood on site, reducing waste. The future involves expanding the program to Tanzania and continue helping to treat a wide array of conditions.