Here are a few examples of the many maps available on the internet that illustrate the vulnerability of food production, distribution, food safety, and international food security to changes in climate.

Crop Explorer  
Crop Explorer CropScape - Cropland Data Layer
CropScape – Cropland Data Layer VegScape - Vegetative Condition Explorer
VegScape – Vegetative Condition Explorer  
NAIP (2015)  
NAIP (2015) Poverty Mapping Project: Poverty and Food Security Case Studies
Poverty Mapping Project: Poverty and Food Security Case Studies Poverty Mapping Project: Global Subnational Prevalence of Child Malnutrition
Poverty Mapping Project: Global Subnational Prevalence of Child Malnutrition  
Food Environment Atlas  
Food Environment Atlas Food Access Research Atlas
Food Access Research Atlas Supplemental Nutrition Assistance Program (SNAP) Data System
Supplemental Nutrition Assistance Program (SNAP) Data System  
Atlas of Rural and Small-town America  
Atlas of Rural and Small-town America Geospatial Data Gateway
Geospatial Data Gateway