$PSTH 38 Attabotics Amazon’s ant-size competition 39 CLEAR Biometric screening for a new world of hidden dangers 40 Snowflake A data warehouse in the cloud 41 Airbnb Your delayed destination 42 Duolingo The universal language 43 LanzaTech A carbon-capture moonshot 44 Ginkgo Bioworks The world’s most advanced manufacturing 45 Guild Education Upskilling America 46 Robinhood The new bull market-makers