Understanding that polar bears survived high warming periods is very important. The climate change adherents have pushed the danger of a warming climate by trying to scare people that the cute little bear will become extinct. They're using fear tactics to get the policy changes they desire. If they're distorting these things, what else are they embellishing? Maybe the 140,000,000 number is a lie too. Maybe the whole thing is a lie. If scientists start spinning tales to scare people, they're going to lose fair minded people who do want to do the right thing. But no one wants to be a sucker and spend their hard earned money on nonsense.
I took a quick look at the chart. It is kind of funky because the Y-axis on the left side is different than the Y-axis on the right side, so comparing graphs between time periods is difficult. You would think it would be an easy fix to use the same scale, but apparently not. I think you would probably get a few points off in an elementary science fair for doing so, but it has been a long time since I was in elementary school. Maybe they teach that sort of thing in junior high now. Fortunately for us, we only have to look at the right side of the graph because the polar bear is only between 150,000 and 600,000 years old depending on who you believe, if anyone. That is why I asked if polar bears were around back then when we were talking before. I mean you need less than half the chart, why not post half the chart? At least you wouldn't have to futz around with the scroll bar thing. It leaves me thinking that perhaps this is not the best chart to use when thinking about polar bears. But what the hell. Alan found it on the internet, so let's go with it.
In the article I read, it said that polar bears have only been living during one or perhaps two of the recent warming periods, neither of which were as hot as it is projected to be by 2100. Sounds like we don't know whether the polar bears will go extinct
by looking exclusively at a temperature chart because they have never been through such a temperature change.
Of course there are a lot of other things in play. Temperature itself may not be the critical factor, except as it may influence other factors. I mean I have been to the zoo in the summer when it was really hot and the polar bears were alive, so it is not just temperature. I am thinking about things like food and habitat. But for someone like me, who only knows that polar bears are white, live in the arctic, and eat seals, there are a lot of unknown unknowns. But I am sure the scientists have thought about all this stuff before, and have taken it into consideration. It is not like some random guy on the internet who likes to take pictures and can't decide whether to buy a Canon or a Nikon is going to solve the mystery.
https://www.nrdc.org/experts/sylvia-fallon/polar-bears-older-past-same-futureI am not a scientist. I don't know whether the temperature chart or the article about how long the polar bears have been around are correct. I mean the weatherman can't tell you exactly what the temperature is going to be tomorrow, so I don't know why scientists think they can tell you exactly what the temperature was a million years ago. You also may be able to find contradictory information. In fact I am certain you can. I am just looking at some stuff on the internet, to wit: a temperature chart Alan dredged up from somewhere, and an article about how old the polar bears are I found by Googling "how old are the polar bears?" I am pretty sure that doesn't qualify for the scientific method. And of course if you do not believe experts and think they are all lying to you, none of this stuff makes any difference anyway. Just tell yourself the bears will be okay and be done with it. Don’t think you have to convince me. I shoot Fuji.
Finally, I don't know what Alan is talking about when he says "no one wants to be a sucker and spend their hard earned money on nonsense." Is he talking about making a contribution to the Society for the Preservation of Polar Bears or what? Because it sure seems like it would be easier just to cut them a $10 check and get a free tote bag with a polar bear on it than go through all this rigamarole.