[CSM]

"The increase in atmospheric CO2 concentration from the beginning of the Industrial Age is almost entirely due to fossil fuel use, and that's the cause of the concern."

Really? Prove it.

[cogitator]

Really? Prove it.

How much of the recent CO2 increase is due to human activities?

How do we know that recent CO2 increases are due to human activities?

Addressing the skeptical argument point "Natural Emissions Dwarf Humans'

Global Biogeochemical Cycles: Magnitude and Origin of the Anthropogenic CO2 increase and 13C Suess effect in the Nordic Seas Since 1981

Evidence of Anthropogenic CO2 in the Global Ocean