From Forbes:

The news media are flush with stories this week claiming global warming is crushing global crop production. According to the media, global warming is putting the hurt on two of our favorite indulgences – coffee and beer. For the more globally conscious (or less caffeinated/less inebriated) among us, the media are also focusing attention on an alleged African corn crisis. A look at facts rather than alarmist speculation, however, shows global warming is strongly benefiting nearly all global crops, including coffee, beer barley, and African corn.

Without a doubt, global warming is affecting global crop production. The tremendous improvement in global crop production and worldwide growing conditions during recent decades is one of the most important yet least reported news events of our time. As the earth continues to recover from the abnormally cold conditions of the centuries-long Little Ice Age, warmer temperatures, improving soil moisture, and more abundant atmospheric carbon dioxide have helped bring about a golden age for global agricultural production.

For more, see: Global Warming Is Creating Perfect Crop Conditions