I agree that no significant climate change has occurred due to human activity. In fact, in the past the CO2 levels were far higher! Nevertheless, whatever mess and pollution we humans create on the surface we should clean up so that we don't get accustomed to living in our own ever increasing filth!
The agenda to collect more taxes globally is driven by the corporate/elites of this world so that the 'can't-be-bothered-not-my-problem' masses willingly pay more taxes in one form or another. All one needs is a plausible but difficult-to-prove global-issue topic, such as this one. For example, does the (Al Gore - An inconvenient truth) CO2 curve lead or lag the temperature curve? As is the case that it is the rising temperature curve that leads the lagging CO2 curve, and not the other way around. But that is in the details and who cares about that ...........
The oceans, being warmed by the earth's mantle and core, give up more and more of its dissolved CO2. The warming mantle also starts to thaw the permafrost to release more methane (an even more stronger greenhouse gas than CO2) from frozen surface layers and those methane hydrate layer/deposits previously held stable under pressure in the oceans. Satellite thermal photos show how many hot-spots exist under the polar caps, under the ocean floors and the magma plumes that rise up to warm up the oceans. And one must not forget the ever-continuing plate-tectonics and volcanic activity around the world.
Granted that the overall cyclic picture is likely to be more complicated than the above. For example, there is a natural build-up of radioactive activity in the earth’s core. Then there are the gravitational effects due to solar planetary alignments (including our moon) which can lead to tidal heating within the core. And don't forget the effects of currents induced in the earth's core due to constant bombardment by the solar wind (charged particle) plasma stream (Northern lights) which could also help in raising the core's temperature over eons. Then there is our periodic fluctuating magnetic field which depends on the distribution and movement of the currents in the conductive molten core.
Food for thought .......... the picture is far from simple.
But let us be dramatic, raise billions, no, no that is not enough, go for trillions of $$$, in funds now (the elitist/business model demands it!), tax everything, let us get more and more money flowing into the pockets of the big corporation/elites whose activities are the cause of the 'surface climatic changes'. So, let us carry on duping the masses, rather than accept the complexity of the issue and do our bit to clean our act up.