CO2 won’t produce famine

Climate Change Dispatch
In a March opinion piece in the New York Times (“Lessons from the Little Ice Age”), historian Geoffrey Parker—author of Global Crisis: War, Climate Change and Catastrophe in the 17^th Century—suggests the desperate climate of the years 1600 to 1700 is a template for a collapse of civilization in the twenty-first century. But there’s one massive flaw in his theory: The past cultural collapses have almost all occurred during “little ice ages,” not during our many global warmings.
The seventeenth century was part of the 550-year Little Ice Age, the most recent of at least seven “little ice ages” that have befallen the planet since the last full Ice Age. Studying sediment deposits in the North Atlantic, Gerard Bond of the Lamont-Doherty Earth Observatory found such centuries-long little ice ages at 1300 AD, 600 AD, 800 BC, 2200 BC, 3900 BC, 7400 BC, 8300 BC, and perhaps at 9100 BC. These global Dansgaard-Oeschger disasters have arrived on a semi-regular basis some 600 times over the past million years.
Each of these icy epochs blasted humanity with short, cold, cloudy growing seasons, untimely frosts, and extended drought along with heavy and violent rains. Naturally, crops failed. Cities full of people starved to death, repeatedly, with seven collapses in Mesopotamia, six each for Egypt and China, and two for Angkor Wat. The early cultures gave the illusion of continuity—the Nile and the Yangtze always had at least a little water to use for irrigation, for example. However, little ice age hunger and disease drove human and animal migrations across thousands of miles and over continents, leading to huge invasions such as that of the Huns in Europe’s Dark Ages, and the collapse of kingships and ruling dynasties around the globe. "