Nonsense. The Earth used to be a boiling lump of magma at once point before it cooled, but guess what -- humans can't live on liquid rock. Warmest or coolest is irrelevant over the lifetime of the Earth. What matters is "modern humans".

Global warming is indeed real. Effective change doesn't have to cost a dime. An example is forcing people to buy electric cars at some point. The government spends nothing, people just buy new cars when their old cars expire, now people are driving new cars. Solved.

(you may notice that incentives are gone in most countries now)

And if the weirdos would stop trying to crush every tiny part of carbon emissions, dams provide an immense amount of cheap, clean power once built. We can even make concrete using low-emission methods. Regardless, dams are far better than coal or gas (yes they are random anti-concrete weirdos), so moving on a path to 'better' is laudable and helpful.

(Yes, anti-concrete weirdos are either useful idiots or secret lobbyists. Why? Well, my city puts more concrete into new basements in a single year, than go into a dam that lasts 50 years. Yet I only hear people blather on about dams, which would save immense pollution from coal, the worst polluter it would replace. Also, I've now out-conspiracied the conspiracy guy I'm replying to.)

Power plants expire, whether gas, coal, etc, and instead of revamp you slowly build new, and expire the old.

None of this has to cost. There is no cabal to enact global warming related change.

To clarify I meant over the last 5 million years.

There has been no man-made climate change during the period of "modern humans" either.

It's not a conspiracy as such - it helps to think of government and corporations as an AI. A hive intelligence with constraints and goals. The constraint is to operate within legislation and keep the people on board, the reward/goal is to acquire money/power.

At this stage the financial system (which we gave a money printer!) has obtained enough power to steer legislation in its favour and keep the people on board though manipulation of the mainstream media and education.

Show me the incentives and I'll show you the outcome.

I completely agree that there's no reason why we can't replace power plants with more environmentally friendly ones as they are retired, but ask yourself why Germany then has shut down it's fully operational nuclear power plants. Even with energy shortage and the many of the plants ready to be turned back on tomorrow, the state refuses to.