Keller Cliffton is the co-founder and CEO of Zipline, the largest commercial autonomous system on Earth. With drone delivery operations in four continents and more than 100 million commercial autonomous miles flown, the company aims to transform access to healthcare, consumer products, and food. Today, Zipline completes a commercial delivery every 60 seconds, serves more than 5,000 health facilities, and partners with companies such as Walmart, Sweetgreen, Cleveland Clinic, Mayo Clinic, Chipotle, Pfizer, Panera, many national governments, and more. Keller has raised more than $500 million from private investors such as Sequoia, a16z, Valor, Softbank, and Fidelity. Before starting the company, Keller was a professional rock climber and built computers made of DNA as an undergraduate at Harvard.