Guardian: Consider two propositions. First, avoiding climate catastrophe could require cuts in carbon emissions of as much as 80%. Second, deforestation accounts for 17% of the total. The upshot is obvious. Unless we somehow safeguard the forests, the carbon savings needed elsewhere could entail virtually shutting down the fossil fuel economy. Yesterday a government-commissioned review by the businessman Johan Eliasch spelled out this steely logic. It made an overpowering financial case for investing …