Global warming in the 21st century will alter the frequency of extreme climatic events, such as high-temperature anomalies and “heat waves”. Observations of extreme high temperatures during recent decades have detected upward trends in their frequency of occurrence, and recent state-of-the-art Globa...
If this turns out to be an extra-hot summer as the long term models are showing, and also droughty, then that will make 4 summers in a row (in my area, which is agrarian) of bad years. It will not take long to seriously damage food supplies at the rate this is going. I haven't looked into what conditions have been like in the other breadbasket areas like the Ukraine/S. Russia, the Cone of South America, or the fertile parts of East/South Asia.