Here's a story and a chart from The Economist (HT Chartporn) that should give you a starting point for the new semester.
If you’re not following the story, you’re missing a great resource. Just in the past few days alone there have been two stories in The Wall Street Journal on wheat prices and their impact. "Decision Time Looms for Wheat Farmers" (Subscriber content at this writing but put the headline in your browser. You might find it as free content.) and "Russian Export Ban Raises Global Food Fears" (Free content at this writing).
And remember - it's the most important meal of the day.