There has been a great deal of work done on the interlinkages (or the lack thereof, depending on whom you read) between the shifting global climate and food security. According to the Food and Agricultural Organization of the United Nations (FAO), climate change will “affect all four dimensions of food security: food availability, food accessibility, food utilization and food systems stability” (see here).
One way in which a changing climate affects food security is in agricultural production. Unlike the US, much of the world’s working population is still inexorably linked to agriculture (for instance, as much as 66% of the sub-Saharan African population works in agriculture). According to the FAO report, if climate change continues to adversely affect agricultural production in these areas (due to higher and longer periods of sustained drought, flooding, etc), the ability of those living in these areas both to earn a living and feed themselves becomes seriously threatened.
For a much more thorough exploration of this topic, I would highly recommend the FAO report – it’s packed with information expressed in easy-to-understand syntax.
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