Global Warming

An excerpt from and analysis of the handout given at the end of Al Gore's An Inconvenient Truth

Ten Things You Can Do

Want to do something to help stop global warming? Here are 10 simple things you can do and how much carbon dioxide you'll save doing them.

Change a light: Replacing one regular light bulb with a compact fluorescent light bulb will save 150 pounds of carbon dioxide a year.

Analysis: We made up the figure of 50 light bulbs per household (by counting the number in our house, which seems pretty typical of houses around here). 50x150=7500 lbs carbon dioxide per household. Multiply by 105,480,101 households (2000 Census http://factfinder.census.gov/servlet/QTTable?_bm=y&-geo_id=01000US&-qr_name=DEC_2000_SF1_U_DP1&-ds_name=DEC_2000_SF1_U) this comes to 395,550,378 tons of carbon dioxide (using short tons, not metric tons here)

Drive less: Walk, bike, carpool, or take mass transit more often. You'll save one pound of carbon dioxide for every mile you don't drive.

Analysis: We figured a 50% reduction in driving. Annual miles driven is 2.3 trillion (https://www.worldwatch.org/node/99) Half of that is 1.15 trillion miles, which translates into 1.15 trillion pounds, or 575,000,000 tons of CO2 saved.

Recycle more: You can save 2,400 pounds of carbon dioxide per year by recycling just half of your household waste.

Analysis: 2,400 pounds for 105,480,101 households comes out to 126,576,121 tons of CO2 per year savings.

Check your tires: Keeping your tires inflated properly can improve gas mileage by more than 3%. Every gallon of gasoline saved keeps 20 pounds of carbon dioxide out of the atmosphere.

Analysis: Total US Fuel Consumption (in 2002 http://www.infoplease.com/ipa/A0004727.html) is 167,730,000,000 gallons. Five percent savings would come out to 8,386,500,000 gallons. At 20 pounds per gallon it comes out to 83,865,000 tons of CO2 saved.

Use less hot water: It takes a lot of energy to heat water. Use less hot water by installing a low flow showerhead (350 pounds of CO2 saved per year) and washing your clothes in cold or warm water (500 pounds saved per year).

Analysis: We figured two low flow showerheads per household and multiplied the clothes washing number by 2.59 (average household size 2000 Census) to get a figure of 1995 pounds of CO2 saved per household. Multiplied by the number of households (above) results in 105,216,400 tons of CO2 saved.

Avoid products with a lot of packaging: You can save 1,200 pounds of carbon dioxide if you cut down your garbage by 10%.

Analysis: 1,200 pounds per household comes to 63,288,060 tons of CO2 saved.

Adjust your thermostat: Moving your thermostat down just 2 degrees in winter and up 2 degrees in summer could save about 2,000 pounds of carbon dioxide a year.

Analysis: 2,000 pounds per household comes to 105,480,101 tons of CO2 saved.

Plant a tree: A single tree will absorb one ton of carbon dioxide over its lifetime.

Analysis: Using a 40-year average lifespan for a tree (http://www.friendsoftrees.org/tree_resources/facts.php), we figured that each tree would save 50 pounds of CO2 per year. If each person in the US (299,084,893 US Census Bureau Population Clock http://www.census.gov/population/www/popclockus.html) plants one tree, that results in 7,477,122 tons of CO2 saved (temporarily sequestered) per year.

Be a part of the solution: Learn more and get active at ClimateCrisis.net.

Analysis: We didn't figure any particular carbon savings coming from visiting this website.

Summation:

Total carbon dioxide savings if every person in the US does all of these things: 1,462,453,182 tons.

Total annual CO2 emissions in the US (2004 figures http://yosemite.epa.gov/oar/globalwarming.nsf/UniqueKeyLookup/RAMR6P5M5M/$File/06FastFacts.pdf ) (converted from metric tons) is 6,600,572,400 short tons.

Total carbon dioxide savings represents 22.2% of the total. If every man, woman, and child in the US made all of the behavioral changes listed above, the total CO2 saved in a year would represent 22.2% of the total. This is just for CO2. Other greenhouse gases are not included in this calculation.

Now...here's the extra credit problem: What is the current yearly percent increase in US CO2 emissions? How many years of growth would it take at this level to wipe out (in absolute terms) the savings calculated above?

Anybody? Anybody? Bueller?

*** the above was copied from a listserv I belong to.

Interpretation: There isn't a "safe" solution. The problems are systemic. If we want to end global warming, we've got to bring down the system.

a few quotes

Even the best recipe book is no match for the worst-cooked meal.

Aldous Huxley

"Love takes off masks that we fear we cannot live
without and know we cannot live within."

James Baldwin

What you risk reveals what you value.

Jeanette Winterson

Bigamy is having one wife too many. Monogamy is the
same

Oscar Wilde (1854 - 1900)

Do not wait for the last judgment. It takes place
every day.

Albert Camus