![Photo of Jeffrey Johnson](https://www.boisestate.edu/news/wp-content/uploads/sites/164/2013/07/JeffreyJohnson225x300.jpg)
Associate professor of geosciences Jeffrey Johnson recently was highlighted by the American Geophysical Union in a podcast pertaining to the low-frequency vibrations of earthquakes and how “understanding each volcano’s unique voiceprint could alert scientists to changes going on inside the crater that may signal an impending eruption.”