I'm quite sure I've never seen an article in the Proceedings of the National Academies of Science written by a former teacher, a former student, and a friend at a former employer. Well, that changed yesterday. Three top notch agricultural economists, Jesse Tack, Andy Barkley, and Lanier Nalley, just released a paper published in PNAS about the effect of hot and cold temperatures on wheat yields.
The abstract:
There's more discussion about the study in this piece in the Washington Post.