This is very sad:
Prof. Gregory Poe, applied economics and management, passed away at his residence over the weekend, according to the University.
Before he started working at Cornell, Poe served in the Peace Corps and earned his Ph.D. from the University of Wisconsin—Madison.
Poe taught environmental and resource economics, and was involved in research and outreach programs focused on applied welfare and economics, non-market valuation, experimental economics and water pollution policy.
via cornellsun.com
He was only 56 according to the obituary. Here is his Google Scholar page, I've read and cited most of these papers.