As part of our Graduate Student Seminar this semester, Billy Eymold will be giving a talk entitled, "Out of the Lattice and into the Fluid: The Diffusion of Noble Gases from Mineral Grains in Black Shales" on February 21 at 4:30pm in ML 291. All graduate students and faculty are welcome and encouraged to attend. The format will be approximately 12 minutes for the talk with a subsequent 15 minutes of questioning and discussion with the public audience. After that point, the public audience will be dismissed and students enrolled in ES 8898 will conduct a private discussion with the speaker for another half hour or so. We had a bigger audience last week than we've had before and would like to build on the participation this week. Hope you can attend!