Atmospheric CO2 levels are higher than they have been in AT LEAST 800,000 years.
Temperatures have risen faster over the last century than they have over AT LEAST the last 22,000 years.
At NO other point in the Earth's history has CO2 been produced at the rate at which we've produced it by anything short of a global catastrophe on the scale of the KT Event or the eruption of the Deccan Traps.
Tell us what has happened in HUMAN HISTORY that parallels today's processes and the rate at which they are taking place. The Earth warming a degree over four hundred years when the world population was perhaps a hundred million does not compare to the same warming taking place in a fifth the time with more than 50 TIMES as many people on the planet, MOST crowded onto the coastlines.
So what.
So what? So your claim that there exists "no time in the past that is (sic) any different from today" is demonstrably false. I wish I could get away with a "so what". Easy argument, ain't it.
Perhaps you could spread that point to the denier chorus who continue to claim that the geological record proves CO2 never
causes warming.
When did any of us ever say that CO2 was the ONLY way to increase the planet's temperature? WE haven't. No one has. This argument, then, would be a
straw man: one you've erected yourself not because your opponents have put it forth but because it's a lot easier for you to counter than their ACTUAL position.
Interestingly though the Sun tracks almost perfectly with those warming periods....did I say almost? I was wrong....the Sun actually tracks PERFECTLY with the warming. Just like today.
You've got a penchant for falsehoods.
And even there I won't say the Sun is the cause, because unlike you...I DO know that correlation doesn't equal causation. Never has, never will.
So you have no cause. I guess that's okay because you go so far as to reject that any warming has taken place. That's even easier than a "so what". Must be nice to ignore reality with such conviction, though I can't imagine it gets you very far down the road of life.