Our new paper on the development of “An ultrasound probe array for a high-pressure, high-temperature solid medium apparatus” was just published in Review of Scientific Instruments. Hamed has been working on this project very hard and it is great to see the results published! We managed to integrate several piezoelectric sensors along the loading axis in our deformation apparatus. These sensors allow us to record fast, transient deformation episodes known as “acoustic emissions” or AEs. AEs are seen as laboratory analogs to earthquakes occurring in nature. With this new measurement capability we hope to gain further insights into the processes that generate earthquakes especially at elevated pressures and temperatures prevalent at the base of the seismogenic layer.