Two white-coated lab technicians, seated at work stations in a corner, are vastly outnumbered by the machines. Robotic arms calibrate liquids in microdrops. Small trays, with 96 tiny wells each, shuttle around the lab on magnetic tracks. Centrifuges whir. Gene sequencers hum.

The highly mechanized lab — operated by Ginkgo Bioworks, a fast-growing start-up in Boston — is an engine room of synthetic biology, an emerging field that applies the tools of engineering and computing to make entirely new organisms or genetically turbocharge existing ones. READ MORE