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Top Ten Things to Know About Global Warming - PowerPoint

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									Top Ten Things to Know About Global Warming

Number Ten
• There is a scientific consensus that human activities are very likely to affect global climate

Number Nine
• There is some chance that, due to the uncertainties of complex models and the assumptions used to drive them, the consensus is wrong.

Number Eight
• Ignoring the potential implications of climate change is taking a big risk with a valuable asset.
– The Intergovernmental Panel on Climate Change (IPCC) recommends that we avoid “dangerous human interference” with global climate systems.

Number Seven
• In order to avoid dangerous interference, IPCC estimates that we need to hold global emissions about steady.

Number Six
• Since the developing world would still like to develop, the developed world must make substantial emissions reductions.
– IPCC says 70-80 percent of current levels must be reduced by 20402050.

Important Data
8.00E+09 7.00E+09 6.00E+09 5.00E+09 4.00E+09 3.00E+09 2.00E+09 1.00E+09 0.00E+00 World Population USA OECD Asia Total Carbon Emissions

More Important Data
6 5 4 3 2 1 0 World USA OECD Asia Per Capita Carbon Emissions

Number Five
• The Kyoto Protocol will result in only modest emission reductions
– The US has not yet ratified this treaty

Number Four
• We have 30-40 years to transform industrialized society
– Reducing emissions by 70-80 percent is a substantial challenge

US Greenhouse Emissions
HFCs, PFCs, SF6 N2O 2% 6% CH4 9%

CO2 83%

US CO2 Emissions
Everything Else 3%

Fossil Fuel 97%

US Fossil Fuel CO2 Emissions
Commercial Residential 4% 7%

Industrial 17%

Electricity Generation 40%

Transportation 32%

Number Three
• We already have technologies that can help us on the way
– Efficiency – Renewable Energy – Coal-gasification with carbon sequestration

Number Two

• The behavioral challenges are much more daunting than the technological ones.

Number One
• Climate change isn’t likely to affect our generation. • We need to make changes for subsequent generations.

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