The Science History Institute’s annual T. T. Chao Symposium explores innovations in sustainability in the chemical sciences. Speakers include physicists James Batteas, the D. Wayne Goodman Professor at Texas A&M University; Daryl Boudreaux; Naomi Halas and Trevor Best, co-founders of Syzygy Plasmonics; and Eric Schelter, director at the NSF Center for Sustainable Separations of Metals.