Because I can already hear the anti-man-made-climate-change crowd shrieking... how do we go about determining global temperatures thousands of years ago?
Edit: Stopped being lazy and googled it: https://gizmodo.com/how-do-scientists-know-what-the-temperature-was-thousan-1714597561
Very informative but you see, science doesn't convince the anti-science crowd, pretty much by definition.
Yup, but if I'm talking to someone who doesn't believe in man-made climate change and I show them the xkcd and answer their obvious follow-up question about how we know past temperature, and they STILL don't want to listen to me... well then I know I can never talk to that person again. :)
anti-science crowd
Too bad the anti-science crowd are our elected officials. ༎ຶ‿༎ຶ
I can already hear the anti-man-made-climate-change crowd shrieking…
Generally a good source for this use case. You can sort by popular arguments or arguments by type, and for many answers choose from different detail levels, sometimes even languages.
I didn't find your specific question in their catalogue of answers, but they have a blog post about that topic: https://skepticalscience.com/two-centuries-climate-science-3.html
Centuries of applied critical thinking.
There is also that group that says it will get warmer naturally, by whatever solar flare etc bullshit ever. So business as usual, can't change the course anyway so I will buy a second SUV
It's good to ask the question.
The problem is when they refuse to accept the answer.
One slight correction: evidence indicates that the americas were colonized before the ice age corridor opened. It is now thought that the americas were colonized via short excursions near shore via boats resulting in the coastal areas being inhabitated in only ~500 years from alaska all the way down to the tip of south america. This is thought to be the same way that australia was inhabited 60,000 years ago. The oldest settlement sites are now underwater.
Isn't that more of a recent discovery though? I only mention it cos this comic is from 2016, which, as much as I don't want to acknowledge the passing of time, is 7yrs ago.
It was understood by the early 2010s that the timeline was off. Scientific American ran an article about it at the end of 2012 but it does not surprise me that Monroe would still go by the old timeline in 2016. I only knew about it years ago because I was an undergrad and one of my professors worked extensively in Alaska and neighboring areas during his PhD.
Direct image link for those who can't see it well: https://imgs.xkcd.com/comics/earth_temperature_timeline.png
Well that certainly puts things into a horrifying perspective!
I will continue doing what I can to help. But it’s over.
It's really not. It's just getting started. The worst predictions, of 4-6 degrees of warming, are more or less off the table. Current trajectory is ~3 degrees of warming which... is civilisationally devastating admittedly, but we have pathways to reduce that. Even the 1.5c target isn't over yet.
There is a broad range of potential future climates, and this generation decides which one we end up with. It's not over by a long shot.
I appreciate the optimism, I really do. I hope things basically work out for my kid’s sake.
But even this summer was seemingly hotter than it should have been. I think the cascading issues are here.
I’ll continue voting and doing small peasant actions but unless governments actually treat it like it’s a global emergency, then there’s no chance.
Hannah Ritchie on Keeping Hope for the Planet Alive - Sean Carroll's Mindscape podcast
This episode just came out. There is still plenty that can be done it seems.
It's not a matter of optimism, it's a matter of not repeating our parents' mistakes. Whatever the inevitability of warming, we should fight for every 0.1°C, because there's a big difference for our kids if the average is 2 or 5 or 6 degrees higher.
You can be as pessimistic as you feel the need to, as long as that doesn't stop you from acting.
It's been nice knowing you guys. If we get through this I hope the scientist say to every one of the nay stays I told you so!. they should write it on 100ft high obelisk in marble and granite.
I've always liked this plot. Quick note: at least for me, the embedded image isn't readable due to low resolution.
Looks fine for me in Lemmy Connect. How are you using Lemmy? App? Website?
I had to open it in a new tab to see it anyways, looks fine there
This is from 2016. Randall should do a new one. I wonder how bad it is now...
Likely exactly the same, considering a seven year difference would be barely noticeable on it.
Randal never struck me as a young earth creationist, but there you go!
What are you smoking? The graph goes back 14,000 years beyond what the young earth folks accept. And it's obviously not intended to be a full history of Earth.
"There were probably nobody around before 14,000 years ago to draw the before part of the graph."
- Philomena Cunk
Time for geo engineering, people are stupid.
Edit. Most people have an IQ range of 85-115, add the below 85 = the majority of people. Democracy is decided by the majority.
People are stupid. Let’s keep our hands off geo engineering.
And do what?
Step one: invest in nuclear power and renewables
Step two: stop taking carbon from outside the carbon cycle and putting it into the carbon cycle
Step three: use the abundance of energy from self-heating rocks to take carbon out of the carbon cycle
Reduce emissions. That's cheaper, more effective and safer than any other method.
Geo engineering commonly only tries to fix temperature. While that would be a big achievement, it does not change the CO~2~ ppm. And that translates to ocean acidification. Which translates to mass extinctions. Which is still an existential threat also for land living species, and us.
There is only one solution to fix both (and many other, related / caused problems): Fix the source.
We cannot engineer our way out of all the individual symptoms. Just leave fossil fuels in the ground.
I don't think we can reduce emissions fast enough though. 2050 seems a long way away.
There are ways to capture carbon in seawater, kelp is the fastest growing I know of.
We need many solutions, not one.
There are ways to capture carbon in seawater, kelp is the fastest growing I know of.
Okay, that type of geo engineering is a good counter argument against my previous comment. It comes with other issues and does not solve all issues, but still, good point.
Thanks, good chat!
Rock dust is another promising option
Put paper bags over our heads and lie down.
IQ tests are designed relative to the population so the median is always (or should always be) 100. The point is that is measures people against one another in the present. If we all got 10% smarter, our individual IQ scores would stay the same.
This timeline starts at about the coldest point in the last 66 million years. Definitely not biased.
The point of the graph isn't to show the warming amount its to show how much faster the rate of warming is now compared to previous warming events.
I don't see how this is biased. Showing that the Earth did warm up over time before major human climate change started would be, very weakly, supporting that climate change isn't real. If they wanted to be biased they would start at a warm point, and when the Earth is cooling down they'd be like "see! Earth cools naturally, so it must get warm because of climate change!"
To make my stance crystal clear, I believe in and am deeply concerned by climate change
What conclusion would change if the graph started at an earlier, warmer period?
As far as I know, three crucial things would still hold true:
"My bank funds history chart starts at the lowest point my funds have been since opening the account. Definitely not biased."
Tell me you're a blithering idiot without telling me.
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