So, there is a natural carbon cycle, natural nitrogen cycle etc.

On planet earth, the nitrogen cycle of the whole planet is only 50% of what humans need to eat every year. If you don't have artificial fertilizers, tractors, refrigerators etc etc, there is no way people can be fed even if they are everything that nature created.

We are locked into an artificial life support system. Our agriculture system creates more CO2 than all the cars being driven by a factor of 3.

We have no technology that is waiting to fix this. There is no "fix" where lots of people wouldn't die directly.

We DO NOT have sustainable technologies. For humans, we are committed to planetary overshoot if we stay alive, we have been in planetary overshoot for many generations already.

Your list of "solutions" are not real things that make significant change. Sorry. They slow down the worsening but they will not even extend civilization by one extra generation. You have been duped into thinking about this the wrong way.

Cities are giant factories that require the constant cycling of goods (food, water and other materials) using a transportation grid and they also require constant energy inputs to remove waste materials. Our ancestors didn't build cities to permanently live in until they had cheap surplus energy and a way to store it. I have something to warn you about...so your idea about edencity and public transportation is like you almost see how unsustainable cities are, and why.

The idea that wind and solar are infinitely scalable has actually been properly studied in the literature. For example, Mark Jacobson has a fully elucidated picture of what that would look like globally. If I remember correctly, he calls for every river on earth to be dammed for hydro, windmills covering every continent and around 200 solar panels for every living human AND major deductions in energy usage. This is a more highly industrialized future than any previous human project. He did not explore the material or energy costs of building this system. So for instance, on a planet where we cannot feed, build houses and build transport for everyone it's surprising if we can build them all windmills, batteries, wiring, solar panels and power dams. But...you know...we have to dream right? The main headline is that "the possibility is infinite". I actually don't believe that, it seems like all these large scale programs are already failing in many ways. Not that they aren't the best idea we have, they are just not working out.

By the way , we could also eat insects ground into a protein mush instead of actual vegetables.

That's geoengineering to reduce the strength of sunlight to get heat down. It has to be repeated indefinitely, forever, or heat increases again.

Also, it doesn't reverse what's causing climate change by removing carbon.

What's an example of the technology, and can you explain what scale it works at?

There is a lot of technology to reduce carbon (renewables etc).

You're only talking about reducing the rate of increases. That's irrelevant. Carbon would still be growing, not shrinking.

As I stated, we need a way to decrease the existing carbon, which is a different, much larger problem, with no technology and nothing waiting in the wings. We have no ideas. Renewable or rebuildable power systems could be useful, but how does that power suck fossil carbon out of the biosphere, what's the tech for that?

Many people have been manipulated into thinking of this whole problem as a "flow" or "rate" problem.

"If we could only slow down carbon..."

The thing is that what we have is a "sink" or "stock" problem where it's how much carbon is already in the system -- it's past actions that are already closed off to further change that are influencing things now

The rate of change in climate isn't from the rate of this year's contribution of 4ppm of CO2, it's from having 423ppm in the system all together forcing a very large shift in energy imbalance.

There is no solution space where slowing down the rate is meaningful. Going to zero or net negative for the ANNUAL rate next year is too small a lever against what work would need to happen to make a meaningful difference.

The TOTAL HISTORICAL carbon that is already there would have to be entirely removed and even that wouldn't put the system all the way back due to inertia and other nonlinearities.

What you're feeling today in the climate is actually geared to the emissions levels that were already achieved no more recently than 15 years ago in the past. What we do today will have effects that will only start in 15 years and take a long time to fully play out with effects still coming into play 100 years from today. This is a very very long lag time that confuses everything in terms of human feedbacks and human proof and human priorities.

A great number of people think we know what to do but we were too greedy and corrupt to do it.

I disagree. I think we have no idea what to even do. Humanity does not have the technology or capability to be sustainable. And so we think and talk about it wrongly because we do not want to accept that we are doomed.

Climate change isn't an on/off switch, it's something that can always be made better or worse by increments.

I'm just speaking to the accuracy of this one sentence. This is completely 100% incorrect.

The climate system is a chaos system that has many areas of stability, rapid transformation and tipping points.

If you think the system is only incrementally changing, that's just because you haven't pushed it hard enough to rapidly shift to a new area of behavior you've never seen before.

Many of these regimes are irreversible and cannot be changed back. You cannot unburn toast, it's a one way deal.

Once the climate changes, EVEN if you reset the conditions, you will not return to the initial state. Not at all. That idea is propaganda.

The fossil carbon and other climate related chemicals we have already dumped into the environment have a very long lag time before we see the effects (at all). These chemicals and their effects are more long living that most nuclear waste, for example. These are not going away while humanity still exists. That's a done deal.

David Brooks:

"Trump is the wrong answer to the right question."

According to the research team, the consequences of this reversal are already becoming visible. The upwelling of deep, warm, CO₂-rich waters is believed to be driving the accelerated melting of sea ice in the Southern Ocean. In the long term, this process could double current atmospheric CO₂ concentrations by releasing carbon that has been stored in the deep ocean for centuries—potentially with catastrophic consequences for the global climate.

Oops. 350% growth, not 350X growth...lost some decimal places there. Thanks for the correction.

A constant 2% economic growth rate implies that we expect the world economy in 2100 to be 350 times as large as the economy of today.

That means it roughly doubles every decade remaining in the century.

Insofar as prices or costs can go up, there seems to be no limit to growth.

Insofar as we have real physical resources and production increasing, I have a hard time imagining we can meaningfully double production one time.

For example, I can't imagine a world with twice the built infrastructure we have now. (Houses, roads, power dams, airports, schools, etc). Seems impossible.

If growth has ended or is ending soon, it makes you wonder how long governments will be able to try to print their way out of stagnation before the whole system becomes irrelevant and comical.

Our local ranger station has the senior former wildfire people working now at the front desk just speaking to visitors. (The front desk people were eliminated and they just started moving staff around.) But obviously the normal experts are no longer doing any wildfire planning and response work.

At it happens, it's painfully obvious they also can't answer visitor's questions and don't know the processes to take payments, issue permits and all the things in the front desk job.

So not looking good.