The amount pumpd into the atmosphere actually isn't that great by global standards and most of it anyway wasn't put there by humans.
The plain fact is that at the moment the planet is cooling , not a lot but nevertheless it's cooling.The rise in temperatures noted in the 70s to the 90s (despite claims , it wasn't that rapid or great in historical terms) stopped in 1998.Whatever the reason something stopped it yet more human activity was taken place.
Long term we should , if previous cycles are repeated,warm for a little longer and then cool again.One of these cycles will continue until we are in another ice age. And unlike the effect of an extra degree or two an ice age would be totally catastrophic to us.Not to the planet, it will see us all off.Talk about saving the planet is crap.
To reply to the poster who questions how we know what temperatures were like in the past , the conditions leave clues behind.But we do know for example that the Romans grew vines in Northern England and a thousand years ago Greenland was , er , green and under cultivation.
I don't know what kind of scientist you are, or even if you really are one (I'm having my doubts), but you, quite frankly, don't know what you are talking about.
The level of carbon dioxide doesn't have to be that great compared to total amounts in the atmosphere. In an system where things are incredibly delicate and balanced, like the Earth's ecosystem it matters. Just like a single degree in temperature matters a lot to it.
Like almost all people that try to argue against global warming from human interaction you totally do not take into account the effects of "global dimming" which is also the result of humans and has counteracted a lot of the effect of global warming. In fact if it wasn't for that global warming would be a lot worse still. (Global dimming is also probably a big part why during the times like the fifties there were people that thought the Earth was cooling. There was more particulate pollution and smog and less global warming gases.)
The level of water vapor in the atmosphere has been found by the preponderance of evidence to just be condition of overall temperature, and not really the cause for it. It's argument always irritates me, probably because it's always spouted by people that don't know what they are talking bout or that take some random point they heard from a anti global warming radio talk show host spout. Due to rain and condensation water vapor is a lot earlier to get out of the atmosphere, and it goes to equilibrium based on other things that cause temperature. The increase of water vapor is just due to the increase in overall temperature. The lower the temperature the lower the amount of atmospheric water vapor and vice versa.
While methane might be a more powerful greenhouse gas you, for some reason, don't even take into that's it's increase IS ALSO DUE TO HUMAN INTERACTION. Either with the rise of farm animals, or even greater is the melting of ice caps that release all the stored methane underneath them from decompostion of living things that were there before.
Whether you like or not vast VAST overwhelming majority of climatologist think global warming is creating climate change and is man made. Sorry, you have to actually come up with evidence (real not just the made up stuff) if you want to counter that, and not just use the very convenient excuse that essentially boils down to, "Everybody that doesn’t agree with me can't be trusted because they must be getting paid to say otherwise so everything they say doesn't count." Taking account the overall body of evidence they have acquired I say they have proven their theories pretty damn well. Sorry, I also don't buy a whole worldwide conspiracy theory from them to just make us think global warming is real.
The planet is absolutely not cooling. Any decent climatologist or just plain statistician can tell you that. It might even be the most ridiculous thing you have said yet. It's a complete logical fallacy to say that the Earth has been cooling since 1998. 1998 happened to be an extremely hot year that was an weird outlier. That doesn’t somehow mean every year after that that's cooler means the Earth is getting cooler. (It would be like taking a basketball rookie that has a freak year and averages 40 points a game his first year and then in later years he falls you 15 then goes to 20, 21, 25, 25, 24, 29, 30, 35 as he gets better and then saying he hasn't really gotten better since his rookie year, instead of realizing that one year was a weird year that broke a trend.)
The Earth is getting warmer quicker faster than any other time we know. It will soon start to be warmer than it has for human history. Even the temperatures changes you speak of took thousand or at least hundreds of years, not decades. Soon we will very quickly pass that, and keep going, and going.
Saying the rainforest are ok, and the recovering ones are helping is also a fallacy, because every year that goes by the overall amount shrinks (often by burning that just puts that much more carbon dioxide in the air.), and no recovering ones or new plant growth that might pop up do to increase in carbon dioxide don't come close to counteracting it. It's not that hard to figure out. Less forest, means less carbon dioxide coming out of the air. (Not that having the rainforest be at unspoiled would be close to enough anymore.) Not only would we have to stop the rainforest from disappearing, but just for the US to counter act the carbon dioxide it puts in the atmosphere ever year we would have to plan a forest the size of Texas, ever year.
I don't know where you get your information about Greenland, but parts of it have been farmable for a long time now since the last ice age. if one tried hard enough That seems kind of irrelevant. Looking at the melting of Greenland’s ice is one of the biggest proofs of global warming. Since it's very doubtful the rate the ice is melting off of it and where it will be shortly is anywhere close to where it has been in times of human civilization (even during the times you said were supposedly warmer than now.) In fact if it was as bad then as it is now the glaciers should already be long gone. If you don't believe me go look at Greenland's glacier lost on satelite photographs the last 20 years.
If you're indeed a scientist I would be worried about your competence, and critial thinking skiils if I was your employer.
You know how people put Holocaust deniers, geocentrist, and the Flat Earth society in their own special place of ignorance. Someday people that denied global warming or it being caused by humans will be added to the list among them.