IGL Director Mark Schmitz is one of four editors on The Geologic Time Scale 2012, or GTS2012, a 1,144-page compilation of the latest understanding of Earth’s history, and the means by which geoscientists around the world investigate the rock record. In addition, the Isotope Geology Laboratory at Boise State directly produced 47 of the 260 radiometric ages used in the GTS2012, more than any other geochronology lab in the world, as part of the lab’s comprehensive studies of the Late Paleozoic era of Earth history.