If you can’t see why the history of the worlds’ climate is fundamental to the whole subject of “human survivability”, & even laid out in an A,B,C format so any average intelligent person gets it, so be it
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The first video is only about an hour and a half.
Remind me what proportion of that 400 millions years humans existed, and what proportion of that subset they had infrastructure.
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Haha, as if you’ve watched the video you posted! You do a bit of confirmation bias googling, read the blurb, drop and run. Now you’ve got poor old millagurnzie sitting through hours of the stuff. Dirty emissions
Explain to me how the average temperature dropped by almost half a percentage from 1940 to 1970? Isn’t that the height of industrial progress.
It wasn’t
Every time I come in here I experience the Blitz version of global dimming. Thank fark we had a win
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Except it was. Mass production of consumer goods post world war 2
We’re post world?! It’s worse than I thought
Sulphate aerosols
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Or the much more likely cause of solar flares…
No, they don’t cause solar flares. Sorry just having fun with your typo.
Which shifted to the third world in the 1970s and 80s and has only increased since then.
Not sure what “infrastructure” has to do with “human survivability” unless you are referring to the removal of proven power supply infrastructure & its replacement using very expensive, short life term unreliable wind & solar devices … devices that don’t work when its still & dark, or the use of EVs that don’t work when its too cold, explode when its too hot, & produce far more CO2 to make, & leaves more toxic waste when they are junked … than fossil fuel infrastructure. Do you mean that infrastructure?
Or do you mean the heavy ships & vehicles for transportation & agriculture that produce & move YOUR food, your life-saving drugs, the very clothes on your back, where you sleep, the roof over your families head, the computers you use to make your comments on, the iPhone that keeps you in touch with your friends?
The implications of getting rid of this infrastructure is is all based on NON settled science on computer models that have proven time & time again to be utter rubbish … all based on CO2 being the control ■■■■ to world temperature, … thats what historical records being exposed by non-UN based & funded climatologists, that are from other SCIENTICIF disciplines are exposing & why that information is important …
So why did it decline over a 30 year period?
You missed my terrific joke so here, from online googleversity. A volcano erupting will do it apparently, and (checks notes) HUMANS COMBUSTING FOSSIL FUELS
The observed trends of global dimming and brightening in four major geopolitical regions. The dimming was greater on the average cloud-free days (red line) than on the average of all days (purple line), strongly suggesting that sulfate aerosols were the cause.[20]
In the 1970s, numerous studies have shown that the atmospheric aerosols could affect the propagation of sunlight through the atmosphere.[26][27] One of them had shown that less sunlight was filtering through at the height of 1.7 km (1.1 mi) above Los Angeles, even on those days when there was no visible smog. [28] Another suggested that sulfate pollution or a volcano eruption could provoke the onset of an ice age.[29][30] In the 1980s, research in Israel and the Netherlands revealed an apparent reduction in the amount of sunlight,[31] and Atsumu Ohmura, a geography researcher at the Swiss Federal Institute of Technology, found that solar radiation striking the Earth’s surface had declined by more than 10% over the three previous decades, even as the global temperature had been generally rising since the 1970s.[32] In the 1990s, this was followed by the papers describing multi-decade declines in Estonia,[33]Germany,[34] Israel[35] and across the former Soviet Union.[36]
Subsequent research estimated an average reduction in sunlight striking the terrestrial surface of around 4–5% per decade over late 1950s–1980s, and 2–3% per decade when 1990s were included.[35][37][38][39]Notably, solar radiation at the top of the atmosphere did not vary by more than 0.1-0.3% in all that time, strongly suggesting that the reasons for the dimming were on Earth.[4][2] Additionally, only visible light and infrared radiation were dimmed, rather than the ultraviolet part of the spectrum.[40] Further, the dimming had occurred even when the skies were clear, and it was in fact stronger than during the cloudy days, proving that it was not caused by changes in cloud cover alone.[41][2][20]
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A better question would be why has it increased exponentially since?
Then you’re once again proving that you don’t post in good faith in this thread, because it’s been explained to you many times, in very short words, but you promptly bugger off without addressing it and surface again 6 weeks later to threadcrap with some worthless blogpost or youtube video from the tinfoil hat bowels of the internet.
Infrastructure is stuff like - how many human cities are built in places that will be regularly inundated when sea levels rise? How much water storage infrastructure is built in places where rains will stop falling when he gulf stream blows up or the Himalayan monsoon patterns change? How much agricultural investment and infrastructure has been put into land that will no longer viably or reliably produce crops under lower rainfall and/or saltwater inundation conditions? How many cities that have been built without consideration for major floods or tropical cyclones will soon be subject to those disasters?
That’s what ‘infrastructure’ means.
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how about dust?
Solar flares.