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What do we know for sure?
We now know for a fact that CO2 levels
are rising and that human activity is the cause.
How
Do we know this?
Simple math….
Let's start with the
year 1750, generally accepted as the beginning of
the Industrial Revolution, when the standard measure
for CO2 levels was 278ppmv. We'll begin
then, add the known level of human-generated CO2
for that year, then subtract 2.84% of the excess CO2
– because that's how fast nature tries to restore
the balance. If we do this for 255 years, up to
2005, we get the blue line in the graph below. It
fits the black line – the actual CO2
level – like a glove.
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How accurate is this fit?
Considering the difficulties of gathering data from
centuries past, amazingly close. We know, for
example, that up until 1950, deforestation was
putting about as much CO2 into the
atmosphere as burning fossils, but it's not
easy to know how many trees were chopped down in,
say, 1850, and how much CO2 this put into
the air. In spite of imperfect data, the fact that a
simple calculation predicts the extraordinary shape
of actual CO2 so well is clear evidence
this can not be a coincidental convergence. Human CO2
emissions must have caused the upsurge is
atmospheric CO2.
So what?
The link between human activity and
rising CO2 levels is now clear. The next
one is between CO2 and global warming.
That was predicted over 100 years ago, but the
evidence has become convincing only very recently.
In early
2006, NASA released data confirming that the 10 warmest
years on record have all occurred since 1990, extending the
warming trend of recent decades. This trend includes 2005,
which NASA confirmed as tied with 1998 for the hottest year
on record.
MOST
RECENT STUDY
According to a study issued in October, 2006 by the British
Government, failure to act to cut global warming could cost
the world up to 20 percent a year in lost income, and could
cause widespread death, devastate food sources, and turn
hundreds of millions of people into refugees.
Our
gasoline-burning cars are the second-largest source of U.S.
global warming pollution, and one YOU can do something
about.... but Americans will put more than 300 million new
cars on the road over the next 20 years – if these gas cars
were substituted with electric cars, we could make a major
difference..
Here’s the
Math. If you drive a gas car that gets 25 miles per gallon,
this car will produce approximately 10,000 pounds of CO2.
If you
replace this gas car with an electric, you can prevent
(even after counting power plant emissions to generate the
power) up to 90% of these emissions from entering the
atmosphere.
Or. . . you
can offset this carbon production by planting trees. This
is because the average fast growing tree planted in the
tropics removes 50 pounds of C02 per year. So to offset
your car, you need to plant 200 trees.
For a
$25.00 donation, or if you agree to add $25.00 on to the
purchase of your electric car, we will have 200 trees
planted on your behalf.
You can
then drive both your electric car and your other gas car CO2
guilt free! |