Four of the researchers — two from UC California, Davis, one from University of Oklahoma and one from University of Wisconsin-Madison — are paid, six-figure professors at their respective public universities. These four professors received $583,652 in collective annual salaries. Here is how it breaks down: UC Davis paid the two professors a combined $311,123 in wages (FY2019). The Oklahoma and Wisconsin professors were paid a collective $272,529 (FY2020). All pay records are publicly posted online at OpenTheBooks.com and are the latest year available.