Ten thousand employees; 185,000 acres of Central Valley farmland; $2.5 billion in philanthropy; $11.2-billion combined net worth. That’s the historic donation California agricultural barons Lynda and Stewart Resnick made to Caltech in 2019 to fund sustainability research, the largest amount in the field and the second-largest U.S. higher education gift of any sort, at the time. With their donation, the …