In a special series running throughout the week, BIV examines the unicorns that have been emerging from B.C. over the past year-plus. Once a rare sight, these tech firms with $1-billion valuations have become commonplace on the West Coast. Semios CEO Michael Gilbert joins BIV Today to talk about his journey from chemist to agtech leader, and what’s driving growth as his company deploys millions of sensors on farmland. Tyler Orton hosts.