A Royal Society research team member, Jules Pretty, says the team took into account a number of changes that are expected in coming decades, such as climate change, massive rises in world population, and new consumption patterns.
VOA: standard.2009.10.21
But while U.S. usage has remained flat, China's oil consumptionrises about 5% per year.
As demand rises in China and protein consumptionrises even faster, this requires the intensive growing of grains for both foods and for renewable energy.
Although post-Soviet Russia and Belarus had similar rises in vodka consumption after the Soviet alcohol monopoly broke up, only in Russia did unemployment and death rates surge among working-age men.