> Iron actually comes in powered form to begin with (the cars were literally a joke), and blows off land, or pours out of rivers, in many places already, seeding the southern eddy, for example.

It's the same things with all of these arguments, isn't it? Physics never matters.

One, six, twelve, one hundred billion tons of powdered iron will magically fly into the oceans and distribute itself --just as magically-- in a uniform patter precisely where it is needed.

It will do this without requiring any energy input whatsoever.

It will do this without requiring any additional materials at all.

It will also do this without having to rip the earth open to mine it. Which is convenient because that would --at that scale-- be incredibly damaging and produce so much CO2 it is hard to begin to calculate it.

Of course, the billions of tons of iron powder will have absolutely no effect on anything else on the planet, life, weather, nothing.

Sorry my friend. You acuse me of a lack of creativity. I think my position is precisely opposite that idea. I have decades of experience actually making things, designing, sourcing, manufacturing, building things destined for earth and space. When you do this for as long as I have creativity and imagination increase, rather than the opposite. The other thing you gain is an intense sense of proportion about what is and is not possible, or reasonable.

The common fallacy of all of these proposals is that they sound great until one considers actually making it happen at a PLANETARY scale, not at the academic level. One of my favorite things to point out about academic, vs. real-world, science is that in academics a cow is a uniform sphere of milk, one meter in diameter.

The issue goes far deeper than this conversation.

If you actually honestly look at the issue of global warming, the only conclusion one can honestly reach is that there isn't a thing we can do about it. We are too small. You need Thor to descend on this planet to fix it.

This is NOT about denying climate change at all. It's real. No doubt about it. This is to say: We need to wake up, stop listening to those using this for personal profit (financial or political) and start talking about how we are going to manage living with a changing planet. We are wasting valuable time and resources chasing nonsense and following those who promote it.

I is particularly egregious when the scam artists among us start talking about fixing it in thirty years, or a few decades. They should be laughed out of the public square, and yet, we don't. You can't fix a problem of this magnitude, of a planetary scale, in a few decades. If you try, you are far more likely to kill all living things on earth rather than save one darn thing.

A semi truck travelling at 60 mph stops in about 300 feet.

If I were to propose we stop it in 1 inch without destroying the thing and shredding everything in it and the driver everyone would think I was crazy as can be. The mildest comment would be: You can't do that because of physics.

And they would be right.

The planet takes about 100K years to reduce atmospheric CO2 concentration by 100 ppm. That's if we all left earth tomorrow.

We actually have people claiming we can do the same in 30 years. That is a ratio equivalent to stopping a semi truck travelling at 60 miles per hour in 1 inch rather than 300 feet. Why aren't we calling these people crazy?

This issue will take THOUSANDS of years, and likely tens of thousands, to revert. In other words, it is measured in hundreds of human generations, not three decades and four election cycles.

We need to stop with the nonsense and start talking about reality.