Live data from Hacker News

The world has probably passed peak pollution

sustainabilitybynumbers.com

261–270 of 383 posts

Re: The world has probably passed peak pollution

#261

Many will regret being distracted by the world's problems when they could have been building their lives. https://www.youtube.com/watch?v=gxYt--CFXK0 > Looking back, my only Berklee classmates that got successful were the ones who were fiercely focused, determined, and undistractable. > While you’re here, presidents will change, the world will change, and the media will try to convince you how important it all is. >…

Kind of repeating myself from another comment, but the person making this comment is basically standing atop one of the most singular vantage points in all of human history. To say this advice is non-generalizable is an understatement, IM personal O. Setting aside that this was the entry point of the ZIRP years (unique even among US history), the United States from 1920-2020 was basically unprecedented in terms of gl…

Wrong Berkl(ee)

Re: The world has probably passed peak pollution

#262

Earlier quoted context omitted.

Kind of repeating myself from another comment, but the person making this comment is basically standing atop one of the most singular vantage points in all of human history. To say this advice is non-generalizable is an understatement, IM personal O. Setting aside that this was the entry point of the ZIRP years (unique even among US history), the United States from 1920-2020 was basically unprecedented in terms of gl…

Wrong Berkl(ee)

Lmao whups

Re: The world has probably passed peak pollution

#263

It's interesting to revisit the Limits to Growth study [1] in light of these recently-declining exponential curves. Somebody did [2] and found that we're basically on track for the model's bleak predictions. But the way that the model's predictions have come true is different than what's been popularized. Instead of mass die-offs from famine and pollution, we're seeing population collapse because of birth control, de…

The distinction between the two scenarios is the original, theoretical scenario did not foresee the negative feedback loops that actually occurred. It's a pretty glaring miss when you're trying to make predictions. This is why I was always skeptical of dystopias that depend on overpopulation. If life is so miserable why would people continue to have so many children?

LtG summary from the intro:

> 1. If the present growth trends... continue unchanged, the limits to growth on this planet will be reached sometime within the next one hundred years...

> 2. It is possible to alter these growth trends...

> 3. If the world's people decide to strive for this second outcome rather than the first, the sooner they begin working to attain it, the greater will be their chances of success

Far from "missing the negative feedback loops", I think that amplifying that feedback was the whole point.

Also, we're only halfway through the original period, so it seems premature to declare victory.

Re: The world has probably passed peak pollution

#264

I find this title highly misleading “peak emission” would be much more accurate. “Peak pollution” sounds like the amount of pollution in the environment will actually _decrease_ going forward. That is simply not true, it will continue to increase, just slightly less fast. Sorry if I don’t feel euphoric right now.

Isn't the concept of pollution highly subjective?

It's really not, for most things. What exactly would you call an oil spill or leaded gas fumes if not pollution?

Re: The world has probably passed peak pollution

#265

I find this title highly misleading “peak emission” would be much more accurate. “Peak pollution” sounds like the amount of pollution in the environment will actually _decrease_ going forward. That is simply not true, it will continue to increase, just slightly less fast. Sorry if I don’t feel euphoric right now.

Isn't the concept of pollution highly subjective?

Within certain bounds. Climate scientists likely don't agree on the ideal CO2 PPM level, while agreeing that the current level is not it.

Anyone who wishes to claim pollution is always a subjective concept is welcome to drink a few gallons of water from Lake Karachay.

Re: The world has probably passed peak pollution

#266
post #97

Earlier quoted context omitted.

Yes, I am. Humans don't live forever. No offspring and it's all gone in one generation, disregarding if they're 8 billion or 100 billion.

Humanity will eventually go extinct, but birth rates would need to decline much further or stay this for a very long time before it’s a meaningful issue. Further, people alive in 2300 will be decedents of people who chose to have kids generation after generation despite living in an industrialized environment. That self selection both in terms of DNA and culture means a population bounce back becomes increasingly lik…

Yes, fertility is heritable.

Re: The world has probably passed peak pollution

#267
post #207

Earlier quoted context omitted.

I thought greenhouse gasses will increase in concentration as the feedback loop of polar region is forcing trapped gasses out of the ground.

I thinks that’s been predicted but not observed thus far.

On the other hand, once it is observed it will be too late to reverse.

Re: The world has probably passed peak pollution

#268
post #205
post #175

Earlier quoted context omitted.

I'm not sure "peak baby" is a good thing, but agree with you that the other three peaks are encouraging. Arguments by smart people like Sabine Hossenfelder have led me to question the conventional wisdom on population growth. For example, see https://www.youtube.com/watch?v=VI1AaZ9OkH8 .

Conventional wisdom on population growth is that it’s a solved problem and that the population will inevitably stabilize or decline. I say let’s not count our chickens just yet. There are still countries and groups where the growth rate hasn’t stabilized at all, and even if these are small today, exponential growth means they soon won’t be. Population growth will continue until everyone agrees it shouldn’t.

Due to the dynamics of demography, a population is either exponentially growing or exponentially shrinking. A stable population is an unrealistic goal.

Re: The world has probably passed peak pollution

#269
post #7

Earlier quoted context omitted.

> - Peak baby - 2013. [2] I think your source's claim that "The planet will never see more babies than it has in 2013" is open to question. To just use the US as an example: mainstream Americans have a declining fertility rate, and we have no reason to think that is going to reverse in the foreseeable future. Immigrants have higher fertility, but they tend to converge to the mainstream after a generation or two. So,…

> the miracle of exponential growth means that within 2-3 centuries, they could be the majority of the US population It's so unhelpful to speculate about what the world will be like 100 years from now. Think about what things were like in the 1920's and how unrecognizable the world is by comparison. Then, consider that technology is being developed significantly more quickly than it was in the 1920's.

True, I struggle to think 10 years ahead these days. The horizon for predictions is definitely shrinking.

Re: The world has probably passed peak pollution

#270

Earlier quoted context omitted.

A shrinking population is fine, this planet has its limits. A rapidly shrinking population is not ideal.

There is a lot of panic over shrinking population where people project it out 1000 years and find there are only like 5 people left in the world. Steady state population should be the long term goal, at least until we start moving into orbital colonies or something. But unfortunately that's an anathema to growth oriented economies which makes it the bad guy in economics and politics.

At fertility rates of 1.6, it takes just 25 generations for the global population to go from 8 billion to 900k. Just 10 generations for the global population to drop below 1 billion. Pretty scary stuff.
Post reply on HN