This episode is an interesting discussion about the European Synchrotron Radiation Facility (ESRF) in Grenoble, France. I had a chance to talk to Claus Habfast, physicist and head of communications for ESRF. ESRF is an accelerator facility the creates high-energy x-rays that are used for experiments in various areas of science, from biology to physics to materials science and chemistry. In the episode, Claus talks about how ESRF works, highlights a couple of interesting recent experiments and puts ESRF into the context of other accelerator laboratories.