There are more people & animal life on Earth than automobiles. It's not even close. All that damn breathing, and let's not even get in to Volcanoes. Nothing can match the amounts of CO2 they expel.
Besides CO2 doesn't cause climate change.
That's a red herring, and is nothing but a ploy as if to say "prove God exists."
There is no actual evidence for manade climate change. It's all theory and models and out of the 120 models used over the past 20 years they have had 100% failure rate in predicting climate based on the models.
The reason being is that
1.) We cannot model global climate accurately and tie it to manmade activities. That is s double barrier that no one can conclusively overcome based on limited computer generated models that are missing a large swath of data that has had to be ommitted to even make the models work. There are too many variables.
2.) Because they have had to dumb down the models and try to tie CO2 to climate change they will never be accurate.
3.) The Earth's climate systems are too vast even with our modern technology to make it predictable. Weather models and climate trending is woefully inaccurate the further in time you try
to predict it.
4.) To simplify the Climate Models they have had to manipulate some data and omit other data. The following is list of data omitted.
A.) Solar Minimum and Maximums. Because we have only been able to measure solar output for a few decades we do not have an accurate record of how much solar output vacillates between maximums and minimums.
B.) Cloud Cover.
Because we cannot predict a realistic cloud cover on any given day year Era, Epoch, or Period in a model, they cannot even incorporate this in to the climate simulation models.
C.) The Jet Stream.
The Jet Stream greatly affects the climate on a large scale in the various regions on The Earth. Because this cannot be accurately predicted what The Jet Stream is going to at any given moment this variable cannot be included in any simulations aka climate models.... or if you like "video games".
D.) Paleo Climate CO2.
You cannot measure paleo climate CO2 with any accuracy. There is always an area of uncertainty. Scientists often remove the "area of uncertainty" in their graphs which is intellectually dishonest and misleading to the public. They do this because it often weakens or defeats their arguments. So much for "settled science."
People have tried to use ice cores, and tree rings but both can only provide ranges because you can only go back so far with ice cores and they continually leach CO2 in to the atmosphere. Again exponentially inaccurate the further back in time you try to go.
This is not an accurate measure. Cores from carbon dated rock is more accurate but again Carbon Dating becomes more innaccurate as you go back in time. Any graphs I post are based on rock cores as they provide a more accurate picture but again you have to include the " area of uncertainty" to be intellectually honest, and these are projections and educated guesses which are exponentially and increasingly more inaccurate as you go further back in time.
Tree Rings are used in some studies. This is like throwing chicken bones on an animal hide and trying to read the past. You cannot use "tree rings" to read or Attempt To Divine a single factor (CO2 Levels).
Rainfall in given year, the length of a growing season in a given year, the frequency of rainfall in a given year, the amount of sunshine in a growing season, the amount of nutrients in the soil and the average temperature in a growing season all affect the width of a tree ring.
E.) Data.
This is the biggest obstacle for climate models. The Earth is too vast. Even with satellites we cannot measure temperature on every square inch of the Earth. We cannot measure temperatures at various depths in our oceans and lakes and rivers and streams. We cannot measure microclimates.
We try but we just can't and it's a myth to make people believe we can.
We have only had the technology to look at The Earth from space for about 40 years, and even now it still looks like a grainy photograph compared to the actual data needed to make a simulated climate that has any accuracy.
Go back a 100 years and you have NO Accuracy at all when trying to make educated guesses about our climate.
None!
Man Made Climate change is an interesting theory. But it's only a theory. People are invested in it. Their careers, their income, their political power.
It's a multi trillion dollar business.
I am fine with Lefty making a lot of money, and even getting truckloads of our tax dollars delivered to him to do research, but you should not be re-engineering our economies and politics based on a molecule that only makes up 0.04 percent of our atmosphere and absorbs as much IR as it reflects making it Climate Neutral.
Paleo Climate measurements of CO2 are not only innaccurate regardless of the method you use but the cause & effect assigned to CO2 is theoretical and misleading.
CO2 levels rise and fall with natural climate change and this is tied to solar minimums and maximums and is a marker indicating these vacillations and is not the cause of them.
Below are three graphs. First two are without the area of uncertainty and one with (the third). Both are based on paleo geology (rock cores)
Note the shaded area below in the sameness graph and how wide the range is. These areas of uncertainty are always removed from graphs being shown to the Public.