Mongabay: In a report released Wednesday the International Energy Agency warned that a business-as-usual approach to energy use would result in a 6°-degree rise in temperatures putting hundreds of millions at risk from reduced water supplies and diminished agricultural production. But the energy think tank said that limiting temperature rise to 2-3°-rise by the end of the century would be “possible, but very hard.” “Current trends in energy supply and consumption are patently unsustainable – …