Guardian: A “perfect storm” of food shortages, scarce water and high-cost energy will hit the global economy before 2030, said the government’s chief scientific adviser, John Beddington, last week. Factor in accelerating climate change and this lethal cocktail leads to public unrest, cross-border conflict and mass migration – in other words, an economic and political collapse that will make today’s economic recession seem very tame indeed. But though I totally agree with John Beddington’s analysis, I …