[dalbasal]

This is not impossible.

There are a bunch bunch of ideas for how to build a "thermostat." Some of them might be affordable for even a mid sized economy. We could find ourselves in a world where 26 different countries have competing climate control agendas and toolkits. Presumably Vanuatu has a different take that Latvia.

Perhaps this will be the 22nd century's alternative to resource wars.

[credit_guy]

“Give me a half tanker of iron, and I will give you an ice age.” - John Martin

https://en.wikipedia.org/wiki/John_Martin_(oceanographer)

[gaius]

What’s the downside to that strategy? It seems like a no-brainer at first glance

[gpm]

I think the main downside is that we are quite sure what would happen. The primary effect (a giant fucking algae bloom) is pretty well known. But the secondary effects are hard to predict and could be very negative.

Running experiments on the planet we live on is usually frowned upon.

[SketchySeaBeast]

> Running experiments on the planet we live on is usually frowned upon.

You don't like to test in PROD?

[zipwitch]

I'd guess it's more that he doesn't want to test life support in PROD.

I feel that way myself, but I fear we aren't going to end up with any better choices.

[SketchySeaBeast]

Clearly the answer is to create a copy of prod in a test environment (Mars?).

[wereHamster]

> Running experiments on the planet we live on is usually frowned upon.

We are in a big fucking experiment right now: what happens if we release fucktons of CO2 into the atmosphere? Most of the developed world doesn't give a fuck.

[arethuza]

Purely anacdotal of course, but most of the really bad incidents I've been involved in with production systems were actually caused by a rushed response to an initial problem that seemed serious at the time....

[wereHamster]

Nobody is pushing for a rushed response. Just some fucking common sense, and scientifically literate people. And nobody can cry 'rushed response' anyway because the effects have been known (more or less accurately) for dozens of years.

[wongarsu]

> Most of the developed world doesn't give a fuck

Most of the world signed the Paris Agreement. The majority of the developed world thinks man-made climate change is real and is a threat. Conflicting priorities and systems of government that are set up for short term decisions make progress much slower than it should be, but saying that we don't care is very unfair to most of the developed world.

[black6]

> Running experiments on the planet we live on is usually frowned upon.

Without another Earth to act as a control group, you could say experimenting is technically impossible.

[gaius]

you could say experimenting is technically impossible.

You could but that hasn’t stopped anyone so far

[credit_guy]

Indeed, and you don't need to start with a half-tanker, especially if you are not aiming for an ice age. You can start with a half-bucket and work your way up to a half-kayak, half-fishing-boat, maybe half-trawler.

Oh, wait. Some guy did just that in 2012 [1]. Some people claim it was an absolute success, while some others claim that more studies are needed (but they are not willing to fund them!), or we should not play with the only planet we have, etc, etc.

[1] https://planetsave.com/2014/07/02/ocean-fertilization-danger...

[Rubinsalamander]

Guess they would have to scatter the metal so that the algae have more iron surface area. Would make it hard to remove if it turns out bad

[coldtea]

That we barely know enough about how our changes will affect the ecosystem at large, and can get feedback loops that get out of control.

[dalbasal]

Erm... Isn't the downside that op will give us an ice age of empires unpredictable severity and duration?

[jandrese]

IIRC it was tested on a small scale and didn't work. Fish ate the algae before it could settle on the sea floor.

[moultano]

I know settling to the sea floor is the intended result, but locking up more carbon in the steady state biomass of creatures would do the trick too. If we did this continuously could we just grow the biosphere?

[fiter]

It may vary with scale. Similar to how swarming populations (cicadas) can saturate the local predators.

[gameswithgo]

too many whales!

[BurningFrog]

Vanuatu is 270k people. They can be bought off in any deal.