Global Greenhouse Gas Emissions by Gas. http:// epa.gov/climatechange/ghgemissions/global.html Source: IPCC (2007) ; based on global emissions from 2004. . Fuel Mix for U.S. Electricity Generation. http://www.epa.gov/cleanenergy/energy-and-you/index.html. Greenhouse Gas emissions by country.
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Source: IPCC (2007);based on global emissions from 2004.
Energy for Sustainability (2008)
China, India, etc
Energy Use Predictions for scenario A1 (BAU)
The lower the number, the harder for the economy to recover
FAQ 10.3, Figure 1. (a) Simulated changes in atmospheric CO2 concentration relative to the present-day for emissions stabilised at the current level (black), or at 10% (red), 30% (green), 50% (dark blue) and 100% (light blue) lower than the current level; (b) as in (a) for a trace gas with a lifetime of 120 years, driven by natural and anthropogenic fluxes; and (c) as in (a) for a trace gas with a lifetime of 12 years, driven by only anthropogenic fluxes.
It costs less to fix global warming now than it will in the future but we needn’t stop all economic growth to fix the problem
Social Discount Rate is a measure used to help guide choices about the value of diverting funds to social projects. It is defined as “the appropriate value of r to use in computing present discount value for social investments” ( the lower, the more future generations are valued