Upload
elada
View
131
Download
1
Tags:
Embed Size (px)
Citation preview
Even though we just make up
4% of the world’s population…
…we use over 25% of the
world’s energy
We’re gluttons
Which is more
responsible for
global
warming:
cheeseburgers
or SUVs
?
Question:
Which is worse for
global warming—
cheeseburgers
or SUVs?
Which is more
responsible for
global
warming:
cheeseburgers
or SUVs
?
Question:
How much more energy
does a big desktop
computer use than an
efficient laptop?
Which is more
responsible for
global
warming:
cheeseburgers
or SUVs
?
Answer:
As much as
50times more
2891kWh
55kWh
Answer:
1.5
Question:
How many transatlantic flights equal the annual
CO2 emissions of a typical car?
So, here’s our 8-step plan
Some of the steps are pretty easy.
Some of them are a little harder.
We can do this.
Average U.S. household
annual energy use:
43 tons of CO2
Auto travel
Air travel
Computer
Appliances
Lighting
Water heating
Home heating/cooling
Food
Goods
Waste
50
45
40
35
30
25
20
15
10
5
0
50
45
40
35
30
25
20
15
10
5
0
AUTO TRAVEL
BEFORE AFTER
Replace 25mpg car with 40mpg car; reduce driving from 12,000 to 10,000 miles a year: saves 2.2 tons
Cut your average highway speed from 70 to 55: saves 2.7 tons
Total savings: 4.9 tons
50
45
40
35
30
25
20
15
10
5
0
AIR TRAVEL
BEFORE AFTER
Eliminate 1 cross country flight: saves 1.9 tons
Total savings: 1.9 tons
50
45
40
35
30
25
20
15
10
5
0
ELECTRICITY
BEFORE AFTER
Replace desktop computer with laptop, turn it off when not in use: saves .2 tons
Total savings: 2.55 tons
Replace ordinary light bulbs with CFLs: saves .8 tons
Air dry laundry: saves 1.3 tons
Unplug electronic devices when not in use: saves .25 tons
50
45
40
35
30
25
20
15
10
5
0
WATER HEATING
BEFORE AFTER
Insulate water heater: saves .25 tons
Total savings: .5 tons
Turn down heater by 3 degrees: saves .25 tons
50
45
40
35
30
25
20
15
10
5
0
HEATING & COOLING
BEFORE AFTER
Raise and/or lower your thermostat 2 degrees: saves .8 ton
Total savings: 4.6 tons
Replace inefficient furnace: saves 1 ton
Insulate walls & ceilings, install new windows: saves 2.7 tons
Add weather stripping: saves .6 tons
Plant trees to shade house: saves .5 tons
50
45
40
35
30
25
20
15
10
5
0
FOOD
BEFORE AFTER
Stop eating red meat, and reduce dairy products by 80%: saves 1.85 tons
Total savings: 2.6 tons
Buy 75% of all food locally: saves .75 tons
50
45
40
35
30
25
20
15
10
5
0
GOODS
BEFORE AFTER
Buy 50% of clothing and furniture used:saves 1.8 tons
Total savings: 3.5 tons
Reduce replacement rate of furniture and appliances by 50%; buy 75% of appliances used: saves 1.7 tons
50
45
40
35
30
25
20
15
10
5
0
WASTE
BEFORE AFTER
Increase recycling by 50%: saves .7 ton
Total savings: 1.1 tons
Buy goods in bulk, or with minimal packaging: saves .3 ton
Compost all garden and yard waste: saves .1 ton