The fire-engine-red Empanadas United machine arrived in Philadelphia last fall. It appeared in the lobby under the SEPTA Regional Rail tracks at 30th Street Station, where yearslong renovations have ...

ROCKVILLE, MD — Margarita Womack never imagined she would be making empanadas for a living. She dreamed of spending her life in a lab making life-changing discoveries, she says. Colombian-born Womack ...