When robotics entrepreneur Keller Rinaudo, started his first company at the age of 23, the number of drone strikes in Afghanistan were at an all - time high.

"Most robotic companies were building things that kill people, so we thought it would be cool to build a company that built things that actually make people's lives better," he said.

Now his drone-delivery company, Zipline, is making last-mile deliveries of blood to health clinics and transfusion facilities across Rwanda. Zipline delivers 20% of the country's national blood supply outside of Kigali and have signed a commercial contract with the Tanzanian Ministry of Health to deliver medicines to 10 million of the hardest to reach people in the country. "Entrepreneurship is the only force in human history that have lifted millions of people out of poverty," says Keller.

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