O’Brien has spent the past 30 years as a faculty member at UMSL and is noted for his work using intracavity laser absorption spectroscopy.

O’Brien has spent the past 30 years as a faculty member at UMSL and is noted for his work using intracavity laser absorption spectroscopy.
O’Brien has spent the past 30 years as a faculty member at UMSL and is noted for his work using intracavity laser absorption spectroscopy.
O’Brien has spent the past 30 years as a faculty member at UMSL and is noted for his work using intracavity laser absorption spectroscopy.
Music students in Assistant Professor Bethany Worrell’s class built a larger-than-life model of the larynx and demonstrated how it works to produce sounds.