One things that gets me about the human caused global warming crowd is how they ignore the fact that methane is by far the worst of gasses causing runaway global warming because humans aren't responsible for it.. The tiny amount of CO2 increase is a symptom of global warming, not a cause, and such increases are recorded in ice core samples that were taken from times hundreds of thousands of years before humans released any measurable amount of CO2.

Good science is dynamic and empirical.