"Rainwater everywhere on the planet is unsafe to drink due to levels of toxic chemicals "

[Triloon]

This information was released a couple weeks ago but somehow I missed it. Perhaps you missed it, too.
https://phys.org/news/2022-08-rainwater-unsafe-due-chemicals.html

Someone asked me the other day,"Wouldn't you like to live to be 100?". Why the hell should I like that..

[at140]

1. Until human population on earth

stops growing every year, I am not really worried.

[Triloon]

2. Your worry is not the issue.

Life on earth would find no downside to the human population descending to zero.

[Kaleva]

4. All species will go extinct at some point w/o human intervention

[Triloon]

5. It is the species that go extinct

because of human intervention that is of concern to me, plankton for example.

[at140]

6. Humans have more brain power than

all the Trillion species on earth combined. I am not worried about humans going extinct.
But my predictiction is standard of living will keep going down throughout 22nd century.
Europe is already suffering and the winter season will be very bad there with reduced oil and gas availability and high energy prices.

[Triloon]

7. But it's our vaunted brain power that got us here

and it wont help us any now because this is exactly where we have always wanted to be. Dominion over the Earth and all it's creatures. Our wisdom has never matched our brain power and the result is that we've fouled our nest and the nest of every other living thing as well, forever. We have even poisoned the rain, worldwide.
You are correct that the standard of living will decline, but it will be well after the 22 century before the climate system finds an equilibrium again.
I have no faith that humans can deal with this and I don't know where you get yours. They won't even wear masks in a respiratory epidemic or move uphill from a flood zone.

[at140]

8. You seem to be a deep thinker. Will you please answer 1 question?

I am sure you are well aware ice ages visit earth in cycles.
The interval can be 15-40 thousand years. The last ice age had several mile high ice glaciers in midwest part of America. There was so much ice there, when the ice melted, the Great Lakes were formed. There is plenty of geological evidence about the ice age and glaciers.

The question I am trying to find answer to is...what caused the warming to melt all that much ice?

[Triloon]

9. This is complicated stuff but simply...The Sun did it.

I'm no expert on this at all, but I have learned a few things about it. Science does not yet have a complete answer to the question and research continues. But there seems to have been three major causes for the melting of the ice sheets and a bunch of other factors connected to those major causes.
The most important reason was the tilt of the Earths rotation axis. This tilt moves back and forth a few degrees on it's own cycle of about 40,000 years. It was at its maximum tilt with the northern hemisphere most squarely pointed at the sun 10,000 years ago, when the ice began to melt. Around this same time there was a large release of CO2, apparently from the southern Atlantic ocean. The reason for this release is very unclear but it increased atmospheric CO2 by around 100 ppm, enough to strongly insulate the atmosphere and hold in the heat increased by the planet's tilt. This is the second main reason for the melt. The third is in the physics of ice. Large masses of ice need a deeper chill to maintain their mass than smaller masses of ice. This means that small changes in heat have a greater effect on large ice masses than they do on small masses.
So the increased heat on the land masses of the northern hemisphere from the maximum tilt, combined with the increased insulation from the CO2 caused enough of a heat change to start a chain reaction on the enormous ice masses.
As the ice melted huge amounts of water were released back into the oceans, which altered ocean currents and global wind patterns. This caused an increase of the mixing of warm equatorial air into the high latitudes, causing yet more melting.
There are other cycles involved also, like changes in the radiation output of the sun and the 100,000 year cycle of the shape of the Earths orbit around the Sun, which elongates from a nearly circular orbit into an ellipse and then returns to circular. The Earth receives more heat radiation from the Sun during the circular phase.
There is a lot more to it, but this is about as much as I understand. I hope it helps.

[at140]

10. Thank you!!

That is as good an explanation as I have ever received from anyone.
So it all boils down to effects from Sun. When we get further away from Sun, we get ice ages. When we get closer to the Sun, and with help from natural CO2 the glacier ice melts. And all this will go on for millions of more years.

[ProfessorGAC]

3. 10 Months Ago, There Would Have Been Nothing To Miss

The levels found in water are essentially unchanged from last year, or the year before.
But, regulatory agencies reduced the level considered nonharmful in the last year.
So, the risk is further illuminated.
That's, perfectly fine, of course. As we learn more about health effects, the standards should, and do, get stricter.
There's still some debate on whether pfas is a cumulative risk. Prudence suggests we should consider that to be accurate. The data on cumulative risk is mixed, some studies showing yes, others suggesting not or VERY slow.
But, I think it best to proceed with maximum concern.