A recent paper in the Journal Science co-written by David Battisti of UW's Atmospheric Sciences (and a PCC Collaborator) was the basis for this Time article.
Battisti and co-author Rosamond Naylor (Stanford) used data from 23 climate models to link higher temperatures due to anthropogenic climate change to potential food shortages. Read the original paper: Historical Warnings of Future Food Insecurity with Unprecedented Seasonal Heat.