What are ecological footprints?Ecological footprints measure the extent to which humans are using the Earths bioproductive capacityUnits are global hectaresA hectare of land with average bio-productive capacity (for agriculture, forest, nutrient cycling, energy production, etc.)A hectare = 2.5 acres(1 acre is about a football field between the 5 yard lines)(1 hectare is 2 complete football fields with endzones)

Ecological FootprintFrom Living Planet Report 2008, World Wildlife Fund, 2008.

Ecological footprints measure Earths carrying capacity for humansIn 2010, the biosphere had about 11.5 billion hectares of biologically productive surface (about 1/4 of the total planet)2 billion ha of ocean (the continental shelves)9.5 billion ha of landCurrent estimates indicate that humans are over-shooting the Earths carrying capacity by 25-50%To sustain the current carrying capacity, we could need 11/2 Earths!But, population growth and increasing development means that we are increasing our use of Earths carrying-capacity (bio-capacity)

From Living Planet Report 2008, World Wildlife Fund, 2008.

With respect to sustainability of the human endeavor, population growth rate and population size are only part of the picture: per capita consumption is the otherDeveloped countries have very large ecological footprints

Ecological Footprints (Hectares per person)

Ecological Footprint by RegionFrom Living Planet Report 2008, World Wildlife Fund, 2008.

United States Ecological Footprint By ComponentBiocapacity varies somewhat over time because of technology, agricultural practices (such as fertilizer use and irrigation), ecosystem degradation

Mexicos Footprint by Component

MexicoMexico has moved from using only 1/3 of its biocapacity in 1961 to nearly 1 times its own biocapacity in 2002

Calculate your own ecological footprint(Can you realistically reduce your footprint to 1 planet?)

Can you reduce your ecological footprint to 1 planet??

So, where do we stand?There are 11.5 billion hectares of bio-productive land, and it is decliningThere are about 7 billion people, and increasing at about 1% per year There are currently 1 2/3 hectares per person, and most ecologists believe this is insufficient to support a significant quality of life for the average person on EarthIf we continue down the path we are on, there will be less than 1 hectare per person by 2050

Sustainability ?From Living Planet Report 2008, World Wildlife Fund, 2008.

Sustainability wedges are alterations to decrease the use of each of the bioproductive land groups through increased efficiency, conservation, recycling, resource switching, etc.

Envisioning SolutionsFormer president Bill Clinton has argued that combating climate change doesnt have to mean economic hardship (Clinton Initiative Topic)It could be the biggest development stimulus since World War II, creating millions of jobs and saving trillions of dollars in foreign fuel imports What are some of the strategies we have available?

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Controlling Emissions is Cheap Compared to Climate ChangeA 2010 study by the Pew Trust estimates the cost of lost ecological services by 2100 Costs included factors such as lost agricultural productivity from drought, damage to infrastructure from flooding and storms, lost biological productivity, health costs from heat stress, and lost water supplies The Pew report found that climate change is likely to cost between $5 trillion and $90 trillion by 2100The Stern Review (2006) estimates a cost of only about 1% of global GDP to avoid the worst impacts of climate change

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Stern, NH. 2006. The Economics of Climate Change. Cambridge Press. Cambridge, UK.*

There Are Many Ways We Can Control Greenhouse EmissionsWe can reduce dependence on coal, which produces more CO2 per energy unit than any other fuelWe could institute fees for selling fossil fuelsthese would help fossil fuel prices represent their many hidden costsWe can invest in new technologies and energy efficiencyWe can institute emissions trading, by instituting a legal cap on emissions, then allowing companies to buy and sell shares of that total cap (Californias AB-32 does this)

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A Wedge Approach Involves Dissecting the Problem into Stepwise SolutionsTo avoid a doubling of atmospheric CO2 we need to reduce our annual carbon emissions by about 7 billion tons (=7 gigatons or GT) by 2060Scientists have divided these emissions into 14 wedges, each of which represents 1 GT of carbon emissions avoided in the year 2060

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Local Initiatives Are EffectiveCalifornia has greatly reduced Carbon emisions by switching all coal burning power plants to natural gas (decreased CO2 by 30%) & switching to green energy productionNew Zealand Prime Minister Helen Clark pledged that her country will be the first to be carbon neutralGermany has reduced its CO2 emissions at least 10 percent by switching from coal to gas and by encouraging energy efficiency throughout societyDenmark now gets 20% of its electricity from windmills

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In the United States, more than 700 cities and 39 states have announced their own plans to combat global warming. And 450 college campuses have pledged to reduce greenhouse emissions. Some have promised to be carbon neutral by 2020. Some corporations are following suit.California has had almost no increase in per capita energy consumption since 1970 the only state with such a record*

California: A long history of investing in clean power and energy efficiency19742008

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California is a model for efficiency(2005)= 4,000kWh/yr= $400/capitakWh/personUnited StatesCaliforniaPer Capita Electricity Sales (not including self-generation)

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Energy Efficiency StrategiesFlattening out the curve yesterdayDecouple sales from revenues eliminate disincentiveSet and strengthen building and appliance standardsInvest in utility energy efficiency programsBending the curve downward tomorrowStrengthen incentives Decoupling PlusSet long term goals to achieve durable, broad-based reductionsEnhance strategic planning: work backwards from goalsImprove branding, messaging and marketingInvest in workforce and research and development

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Accomplishing just half of these wedges could level off our emissions. Accomplishing all of them could return to levels well below those envisioned in the Kyoto protocol

Wedge Analysis

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Because most of our CO2 emissions come from fossil fuel combustion, energy conservation and a switch to renewable fuels probably are the first places we should look. Two wedges (2 GT reduction in carbon emissions, or about one-quarter of what is needed to stabilize emissions) could be accomplished by doubling our average fuel economy from the expected 30 miles per gallon in 2060 to 60 mpg, and by halving the number of miles driven each year by switching to walking, biking, or using mass transit. We could save another 2 GT, simply by installing the most efficient lighting and appliances available, along with improved insulation in buildings. Another wedge would be improving power plant efficiency and reducing the energy consumption of industrial processes could reduce carbon output one wedge (1 GT). Capturing and storing CO2 released by power plants, methane wells, and other large sources could save another billion tons of carbon. Much of this CO2 could be injected into oil wells to improve crude oil production. Altogether these policy changes add up to considerably more than the 7 GT per year reduction we need to make by 2058 to avoid doubling atmospheric CO2 concentrations. If we used all 14 available options, we could reverse the present trajectory and move toward zero greenhouse emissions.*

McKinsey, December 2007U.S. GHG Abatement Mapping Initiative

*In McKinseys Mid-range case, 3.0 gigatons are abated at below $50/ton CO2e, 1.1 gigatons (37% of total) comes from EE at negative cost.Mid-range case brings emissions below current levels but not as far as current legislative proposals.This is from December 2007 report, Reducing GHG Emissions: How Much at What Cost?

John Creyts speaking at NARUC ???

22 States Committed to Regional Carbon Markets (w/ an additional 8 observing)Source: Pew Center

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Products and the EnvironmentAt first glance, the relationship between products & our environment may seem clear,BUT.

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Lets consider the simple French fryWhat are its connects to the environment? What impact does it have?

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How did the fry get to the restaurant?http://www.rprogress.org/

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What impact did its journey have?http://www.rprogress.org/

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What impact did these impacts have?http://www.rprogress.org/

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How might all of this affect the Earths systems?http://www.rprogress.org/

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Weve considered only the potatoConsider all the other parts of your mealthe other foodsthe utensilsthe napkinsthe condimentsthe drinksThere are multiple environmental impacts involved in these as well

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Can you reduce your ecological footprint to 1 planet??

Sustainability wedges are alterations to decrease the use of each of the bioproductive land groups through increased efficiency, conservation, recycling, resource switching, etc.*

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Stern, NH. 2006. The Economics of Climate Change. Cambridge Press. Cambridge, UK.**

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In the United States, more than 700 cities and 39 states have announced their own plans to combat global warming. And 450 college campuses have pledged to reduce greenhouse emissions. Some have promised to be carbon neutral by 2020. Some corporations are following suit.California has had almost no increase in per capita energy consumption since 1970 the only state with such a record**

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Because most of our CO2 emissions come from fossil fuel combustion, energy conservation and a switch to renewable fuels probably are the first places we should look. Two wedges (2 GT reduction in carbon emissions, or about one-quarter of what is needed to stabilize emissions) could be accomplished by doubling our average fuel economy from the expected 30 miles per gallon in 2060 to 60 mpg, and by halving the number of miles driven each year by switching to walking, biking, or using mass transit. We could save another 2 GT, simply by installing the most efficient lighting and appliances available, along with improved insulation in buildings. Another wedge would be improving power plant efficiency and reducing the energy consumption of industrial processes could reduce carbon output one wedge (1 GT). Capturing and storing CO2 released by power plants, methane wells, and other large sources could save another billion tons of carbon. Much of this CO2 could be injected into oil wells to improve crude oil production. Altogether these policy changes add up to considerably more than the 7 GT per year reduction we need to make by 2058 to avoid doubling atmospheric CO2 concentrations. If we used all 14 available options, we could reverse the present trajectory and move toward zero greenhouse emissions.**In McKinseys Mid-range case, 3.0 gigatons are abated at below $50/ton CO2e, 1.1 gigatons (37% of total) comes from EE at negative cost.Mid-range case brings emissions below current levels but not as far as current legislative proposals.This is from December 2007 report, Reducing GHG Emissions: How Much at What Cost?

John Creyts speaking at NARUC ???*

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