8. LYNDA RESNICK

$4 billion  SOURCE: Agriculture AGE: 78 • RESIDENCE: Beverly Hills, CA SELF-MADE SCORE:  Drought-ridden California land continues to produce pistachios, almonds and pomegranates for the nearly $5 billion (estimated sales) Wonderful Company, cofounded and co-owned by Resnick and her husband, Stewart. Lynda leads marketing and also spends her time on philanthropy and health programs for Wonderful’s workforce. In 2019, the couple pledged $750 million to Caltech for climate-change research, the largest gift in the university’s history.