Climate Change and extreme weather should force us to store more grain
"If stocks equal to 70 days of grain consumption were sufficient 40 years ago, then today we should plan on stocks equal to at least 110 days of consumption to take into account the more extreme weather events that come with climate change."
Lester Brown, "The Weakest Link," Resurgence and Ecologist, Jan/Feb 2013 (No link available)