In this week's episode we discuss a paper about using paleobotany to reconstruct paleoclimate, and then spin this discussion into a longer talk about niche conservatism. Meanwhile, Curt violates Godwin's Law by comparing something that is merely horribly unethical with something that is an absolute evil, James gives the Internet and by extension the world an ultimatum, and Amanda confesses to serial herbicide. We also completely mess up our discussion of what stomatal density is used as a proxy for (hint: it’s actually CO2 concentration.... but we apparently forgot that).
 
References:
Utescher, T., et al. "The Coexistence Approach–theoretical background and practical considerations of using plant fossils for climate quantification."Palaeogeography, Palaeoclimatology, Palaeoecology (2014).
Crisp, Michael D., et al. "Phylogenetic biome conservatism on a global scale."Nature 458.7239 (2009): 754-756.