Biologist Thomas Jukes (1906–1999) spent the majority of his career at the University of California, Berkeley, with stints at UC Davis and at Lederle Laboratories, where his work included research on the use of antibiotics in the livestock industry. Jukes advocated for the teaching of evolution in the schools and against bans on the pesticide DDT. He wrote an article about the latter, which was published in the September–October 1963 issue of American Scientist, as well as numerous other articles and a book, Molecules and Evolution (1966).