Doubts about climate change?

There's a silly rumor going around that volcanoes emit far more CO2 than human activity. That silly rumor was debunked in 2009, [b]LOL!!![/b]

[quote]According to the U.S. Geological Survey (USGS), the world’s volcanoes, both on land and undersea, generate about 200 million tons of carbon dioxide (CO2) annually, while our automotive and industrial activities cause some 24 billion tons of CO2 emissions every year worldwide. Despite the arguments to the contrary, the facts speak for themselves: Greenhouse gas emissions from volcanoes comprise less than one percent of those generated by today’s human endeavors.[/quote]
[b]https://www.scientificamerican.com/article/earthtalks-volcanoes-or-humans/[/b]

Want more details?
[quote]
33 measured degassing volcanoes emit a total of 60 million tons of CO2 per year.
There are a total of ~150 known degassing volcanoes, implying (based on the measured ones) that a total of 271 million tons of CO2 are released annually.
30 historically active volcanoes are measured to emit a total of 6.4 million tons of CO2 per year.
With ~550 historically active volcanoes total, they extrapolate this class of object contributes 117 million tons per year.
The global total from volcanic lakes is 94 million tons of CO2 per year.
Additional emissions from tectonic, hydrothermal and inactive volcanic areas contribute an estimated 66 million tons of CO2 per year, although the total number of emitting, tectonic areas are unknown.
And finally, emissions from mid-ocean ridges are estimated to be 97 million tons of CO2 annually.

Add all of these up, and you get an estimate of around 645 million tons of CO2 per year. Yes, there are uncertainties; yes, there's annual variation; yes, it's easy to get led astray if you think that Mt. Etna is typical, rather than the unusually large emitter of CO2 that it is. When you realize that volcanism contributes 645 million tons of CO2 per year – and it becomes clearer if you write it as 0.645 billion tons of CO2 per year – compared to humanity's 29 billion tons per year, it's overwhelmingly clear what's caused the carbon dioxide increase in Earth's atmosphere since 1750.

In fact, even if we include the rare, very large volcanic eruptions, like 1980's Mount St. Helens or 1991's Mount Pinatubo eruption, they only emitted 10 and 50 million tons of CO2 each, respectively. It would take three Mount St. Helens and one Mount Pinatubo eruption every day to equal the amount that humanity is presently emitting.
[/quote]
[b]https://www.forbes.com/sites/startswithabang/2017/06/06/how-much-co2-does-a-single-volcano-emit/?sh=4c086085cbf5[/b]

[sep][sep][sep][sep][sep]

Now Horace will tell you somebody somewhere has better data that supercedes the USGS CO2 analysis, but when pressed, he doesn't seem to know who published it or where or where to find it. Almost as if his bluff was called and he got defensive.