For anyone who believes in karma, everything we do has an effect. As well as the planet pumping away on its own slow throb of eons, we worms on the surface have been doing more than existing in harmony.

There has been a huge increase in the global concentrations of CO2, methane and nitrous oxide since 200 years ago to levels not observed for the past 800,000 years or more. The average rate of increase in atmospheric CO2 was at least five times larger over the period from 1960 to 1999 than over any other 40-year period during the two millennia before the industrial era. The majority of the increase comes from burning fossil fuels.

LH, for a quick discussion of why what's happening is different from the cycles hundreds of millions of years, check this info from the Australian Department of Climate explains with sources.

In the meantime, I have to say that it's good to be skeptical and belief in conspiracies is rational, given the nature of humans and their obsession with power. But just because you're paranoid doesn't mean that everything you disagree with politically is wrong.