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FOSSIL FUELS 85% of the world’s commercial energy COAL OILNATURAL GAS.

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Presentation on theme: "FOSSIL FUELS 85% of the world’s commercial energy COAL OILNATURAL GAS."— Presentation transcript:

1 FOSSIL FUELS 85% of the world’s commercial energy COAL OILNATURAL GAS

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4 20 richest countries consume: 50% of coal 80% of natural gas 65% of oil

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6 U.S. energy consumption 9%

7 COAL Fossilized, condensed carbon-rich fuel 10 X reserves of oil/gas, last 200 years at present rate

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9 Coal mines Surface (strip) mine, Western U.S. Underground (shaft) mine, Eastern U.S.

10 Coal cheaper, but polluting Much Eastern U.S. coal has high-sulfur content, more expensive to mine Much Western U.S. coal has low-sulfur content, cheaper to mine But mining in semi-arid West more damaging to land.

11 Heat value of coal types Anthracite Bituminous Subbituminous Lignite 51% of U.S. use in coal

12 Energy lost from coal 10% lost on transmission lines (stray voltage) 65% lost in power plants

13 Effects on health Black Lung Disease (miners) Respiratory illnesses (public)

14 Effects on land Coal sludge releases Hardpan at strip mines Mountaintop removal Huge water use –Slurry pipelines

15 Effects on air Greenhouse gases –3/4 sulfur dioxide –1/3 nitrogen oxides –1/2 carbon dioxide Toxics –Mercury –Uranium

16 Acid rain

17 Acidity of rain pH of 6.0 –Kills insects, crabs pH < 5.0 –Kills fish, trees

18 Sources of Nitrogen Oxides Nitrogen oxides and sulfur dioxide create acid rain Tall stacks deposit farther

19 Coal scrubbers

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21 The future? Hydrogen fuel cells

22 NATURAL GAS Methane, other Gases in bedrock

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24 Advantages of natural gas Cleaner to burn –Half as much CO2 as coal More efficient –10% energy lost 60-year supply at current rates

25 Disadvantages of natural gas Difficult to transport –Pipelines –Liquified Natural Gas (LNG) tankers Can be polluting, dangerous when extracted Methane bed drilling pollutes

26 OIL (PETROLEUM) Buried organic matter rich in hydrocarbons

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28 Oil Consumption by Sector (1998)

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35 Proven oil reserves 465 billion barrels consumed 1 trillion barrels left 22 billion consumed a year 45 years to go! Party now!

36 1800 2200 2600 Global Oil Production for Resources of 1800, 2200, and 2600 Billion Barrels

37 Distribution of Estimates of Ultimately Recoverable World Crude Oil (1975-1993)

38 World Crude Oil Production

39 World Crude Oil Prices (economic crises in oil states)

40 Global trends in oil Growing use in China (+10%/year) Japan, Europe depend on Mideast New reserves around Caspian Sea –Nearly size of Saudi Arabia Increasing source of major wars, human rights abuses

41 Kuwait oil well fires, 1991

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43 Persian Gulf and Caspian Sea

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45 Oil & natural gas pipelines

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47 U.S. trends in oil Diverse sources (not Mideast) –Venezuela, Nigeria, etc. Opening domestic sources –Alaska controversy Polluting technologies? –Oil shale extraction –Synthetic fuels (coal-to-oil)

48 Exxon Valdez, Alaska 1989

49 Attempts to contain spill

50 Clean-up efforts

51 Prince William Sound fishing industry damaged

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53 Oil in Ecuador Ecuador 2nd largest S. America producer –70% of exports Drilling in Amazon rainforest

54 Opposition to oil companies Construction of roads, pipelines on Indian lands Displacement of Indians, deforestation Oil leaks into rivers larger than Valdez spill

55 Ecuador Indian occupations Texaco withdrew 1992, Arco met demands Lawsuit against Texaco in U.S. courts, 1999

56 Oil in Nigeria Largest producer in Africa, mainly In Niger Delta Nigeria had military governments in 1990s

57 Environmental problems in Niger Delta region Homeland of Ogoni, Ijaw groups Gas flaring hazards Oil spills in mangrove swamp

58 Ogoni environmental protests

59 Oil companies collude with military Many Ogoni killed by military Ogoni leader Dr. Ken Saro-Wiwa executed in 1995 Shell Oil pays, transports soldiers

60 Nigerian women protest, 2002 Protest against pollution, lack of local jobs Ijaw women occupy Chevron oil docks

61 Websites on oil industry and global opposition Rainforest Action Network http://www.ran.org Project Underground http://www.moles.org


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