Estimating causal relationships in natural resource economics; applied data analysis; econometrics; counterfactual thinking, and applications to the economics of: natural resource conservation, species loss and extraction, protected areas, international trade of wildlife products, and endangered species legislation. Prerequisite: One of LFS 252, STAT 200, BIOL 300, ECON 326, COMM 291, FRST 231 and one of ECON 101, ECON 310.