The lost history of America's first Koreatown; Genomic sequencing, explained

More than a century ago, about 300 Korean American immigrants founded a new community in Riverside, California. But a little over a decade later, it vanished. Their stories were lost — until now. Professor Edward Chang rediscovered that history and joins us. And, because of genomic sequencing, researchers are able to track the spread of omicron and other ways COVID-19 is mutating. Dana Crawford, a genetic epidemiologist, explains.