The latest Radio Ecoshock .. well, it's rather doom-focused. He's got pieces from several scientists discussing recent research documenting the human-driven releases of carbon (etc) into the atmosphere. One of the points is methane releases that scientists have documented in the arctic. Well, a methane release isn't directly causated by humans but the claim is that the methane release is due to higher temperature, and that higher temperature is due to prior human-caused releases of carbon into the atmosphere.
Over the history of the planet the atmosphere carbon levels have varied over time, of course. And of course the whole planet has been ice-free at times. The difference this time is that human activities are seeking out sources of high carbon materials (coal, oil, etc) and burning those materials for fuel releasing the carbon. It's been proved over and over there is a strong link between carbon levels and temperature.
The picture in my mind listening to this is - because businesses are incentivized to do more business - that means society is incentivizing itself to seek out fuels and use those fuels to drive business activity - and hence the forces driving business to drive fuel use are indirectly driving increasing release of greenhouse gasses into the atmosphere.