NET WORTH: $7 billionAGE: Stewart, 83; Lynda, 77RESIDENCE: Beverly HillsSOURCE OF WEALTH: AgricultureLAST YEAR: $6.8 billionCHANGE: +3%THE MONEY: Stewart and Lynda Resnick own 100% of Wonderful Co., an agricultural powerhouse that includes citrus, almond and pistachio farms and processing facilities across more than 120,000 acres in the San Joaquin Valley. The company’s POM Wonderful division bills itself as the world’s largest integrated producer of the company’s variety of pomegranates, which are used to make POM Wonderful-branded pomegranate juice. Last year, Wonderful Co. launched its first new product in several years — seedless lemons.THE BUZZ: The Resnicks turned heads last September with a $750 million donation to Caltech for research into sustainability practices and combatting climate change. It’s the second-largest donation to a U.S. university. Caltech plans to use part of the funding to build the 75,000-square-foot Resnick Sustainability Resource Center, which is projected to cost $100 million. Also under Wonderful Co.’s umbrella are floral wire service Teleflora, pest control-provider Suterra, shipping company Neptune Pacific Line, bottled-water company Fiji Water and a vineyard in Paso Robles.