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A climate of insecurity 
Michael Le Page 
Environment Features Editor 
New Scientist
Leaked cable sent from the US Embassy in Damascus to 
the State Department in 2008: 
“The UN Office for Coordination of Humanitarian Affairs 
launched an appeal on September 29 requesting roughly $20.23 
million to assist an estimated one million people impacted by 
what the U.N. describes as the country’s worst drought in four 
decades.” 
“If UNFAO efforts fail, [Syria’s UN FAO representative Abdullah 
bin] Yehia predicts mass migration from the northeast, which 
could act as a multiplier on social and economic pressures 
already at play and undermine stability.”
Food prices and riots
It’s 
complicated…. 
…but climate 
change can play a 
role in conflicts 
Zhang 2011
Michael Le Page
Scientists are conservative! 
The question to ask is not: 
Will climate change be as bad the scientific consensus 
suggests? 
Instead, it’s: 
Will climate change be even worse than the 
scientific consensus suggests?
Michael Le Page
Michael Le Page
Michael Le Page
Michael Le Page
Michael Le Page
The coming decades… 
• We are already seeing an increase in extreme weather events 
• Basic physics tells us there will be more extreme heatwaves and 
more extreme rainfall events in a warmer world 
• Changes in jet stream behaviour due to Arctic warming may also 
be contributing to the rise in extreme weather events. If so, can 
expect sharp rise in extreme events 
• Increasing damage to homes, infrastructure and crops will 
undermine development and exacerbate factors such as 
migration, epidemics and social unrest 
• We cannot say for sure which areas will be hardest hit – great 
uncertainties in short-term and regional projections

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Michael Le Page

  • 1. A climate of insecurity Michael Le Page Environment Features Editor New Scientist
  • 2. Leaked cable sent from the US Embassy in Damascus to the State Department in 2008: “The UN Office for Coordination of Humanitarian Affairs launched an appeal on September 29 requesting roughly $20.23 million to assist an estimated one million people impacted by what the U.N. describes as the country’s worst drought in four decades.” “If UNFAO efforts fail, [Syria’s UN FAO representative Abdullah bin] Yehia predicts mass migration from the northeast, which could act as a multiplier on social and economic pressures already at play and undermine stability.”
  • 4. It’s complicated…. …but climate change can play a role in conflicts Zhang 2011
  • 6. Scientists are conservative! The question to ask is not: Will climate change be as bad the scientific consensus suggests? Instead, it’s: Will climate change be even worse than the scientific consensus suggests?
  • 12. The coming decades… • We are already seeing an increase in extreme weather events • Basic physics tells us there will be more extreme heatwaves and more extreme rainfall events in a warmer world • Changes in jet stream behaviour due to Arctic warming may also be contributing to the rise in extreme weather events. If so, can expect sharp rise in extreme events • Increasing damage to homes, infrastructure and crops will undermine development and exacerbate factors such as migration, epidemics and social unrest • We cannot say for sure which areas will be hardest hit – great uncertainties in short-term and regional projections