Use computer modeling Interpret real data sets to see how widespread global warming was at PETM
A complicated (but very worthwhile) resource to have students figure out how widespread warming was during the PETM.
From Earth Exploration Toolbook
Great GIS, data set case study from SERC at Carlton College
Source: "Case Study: How Widespread Was the Warming at the Paleocene-Eocene Thermal Maximum (PETM)?" Case Study. Web. 18 Apr. 2014. .