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Earth is now heating up twice as fast as in previous decades

newscientist.com

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Re: Earth is now heating up twice as fast as in previous decades

#131

Post by ajuc »

api wrote: post #129
ajuc wrote: post #88

Earlier quoted context omitted.

It will become an issue in 150-200 years even if we just continue on our current trajectory.

Only if exponential growth continues, but population growth is already falling off a cliff and that is the ultimate driver. If population stabilizes or contracts, then the only way this could happen is if per capita energy use continued to increase exponentially to the point that we were radiating enough heat to do this. That seems unlikely. The only scenario I can imagine where per capita energy use goes that high i…

AI will consume any amout of energy if you have enough demand.

Re: Earth is now heating up twice as fast as in previous decades

#132

Post by BizarroLand »

karmakurtisaani wrote: post #128
yongjik wrote: post #125

Earlier quoted context omitted.

Also the terminally online crowd blaming rising prices on greedy billionaires, and global warming on the same billionaires. Tell them about carbon tax and they will non-ironically ask "Why should I pay more when it's the billionaires' fault?" I'm not saying billionaires are victims, but everybody wants it to be someone else's fault and none of their own fault. It's exhausting.

But maybe perhaps the billionaires should be the ones driving the progress, as the power they wield is very much disproportionate?

This person thinks the ants should be pushing the plow instead of the horse pulling it.

Re: Earth is now heating up twice as fast as in previous decades

#133

Post by mbfg »

modzu wrote: post #110
MSFT_Edging wrote: post #5

We may lose stable seasons for growing crops, but at least the chat bot can embed an ad into your question while you wait for your burrito taxi. What is the point of this convenience when it really seems to just be making people miserable and isolated? We're driving off a cliff, and our elected government has a death drive.

jesus will save us

Gabriel Jesus is not a goal keeper.

Re: Earth is now heating up twice as fast as in previous decades

#134

Post by dpark »

ajuc wrote: post #130
dpark wrote: post #103

Earlier quoted context omitted.

> save people lots of time Public transit is rarely a time saver for people who give up their cars in favor of public transit. > reduce crime In what way? Car break-ins presumably go down when there when fewer cars, but does overall crime drop? Doubtful.

> Public transit is rarely a time saver for people who give up their cars in favor of public transit. It saves time when you don't put 10-lane motorways and in your cities nor turn them into parking lot wasteland. > In what way? Car break-ins presumably go down when there when fewer cars, but does overall crime drop? Public transport reduces inequality, which is the main cause of crime. If you have whole groups in so…

> It saves time when you don't put 10-lane motorways and in your cities nor turn them into parking lot wasteland.

I missed the part where this has anything to do with saving time.

I’m not saying that public transit doesn’t have major benefits. I’m totally in favor of strong public transit, but saving time is generally not one of those benefits.

> Public transport reduces inequality, which is the main cause of crime.

If feels like a big stretch to say public transit reduces crime. I wonder if there’s actual data to support this notion.

Re: Earth is now heating up twice as fast as in previous decades

#135

Post by ajuc »

dpark wrote: post #134
ajuc wrote: post #130

Earlier quoted context omitted.

> Public transit is rarely a time saver for people who give up their cars in favor of public transit. It saves time when you don't put 10-lane motorways and in your cities nor turn them into parking lot wasteland. > In what way? Car break-ins presumably go down when there when fewer cars, but does overall crime drop? Public transport reduces inequality, which is the main cause of crime. If you have whole groups in so…

> It saves time when you don't put 10-lane motorways and in your cities nor turn them into parking lot wasteland. I missed the part where this has anything to do with saving time. I’m not saying that public transit doesn’t have major benefits. I’m totally in favor of strong public transit, but saving time is generally not one of those benefits. > Public transport reduces inequality, which is the main cause of crime.…

> I missed the part where this has anything to do with saving time.

If you make cities more concentrated without balooning them with parking lots - everything's closer. If you restrict cars - there's less traffic jams, which makes commute faster.

> If feels like a big stretch to say public transit reduces crime. I wonder if there’s actual data to support this notion.

US has much higher crime levels than other developed nations. It's also the most car-dependant of them.

People often think public transport creates crime, because criminals use it to move (like everybody else). But public transport mainly lets non-criminal people to move, which reduces the number of criminals overall.

Re: Earth is now heating up twice as fast as in previous decades

#136

Post by Fishkins »

dpark wrote: post #134
ajuc wrote: post #130

Earlier quoted context omitted.

> Public transit is rarely a time saver for people who give up their cars in favor of public transit. It saves time when you don't put 10-lane motorways and in your cities nor turn them into parking lot wasteland. > In what way? Car break-ins presumably go down when there when fewer cars, but does overall crime drop? Public transport reduces inequality, which is the main cause of crime. If you have whole groups in so…

> It saves time when you don't put 10-lane motorways and in your cities nor turn them into parking lot wasteland. I missed the part where this has anything to do with saving time. I’m not saying that public transit doesn’t have major benefits. I’m totally in favor of strong public transit, but saving time is generally not one of those benefits. > Public transport reduces inequality, which is the main cause of crime.…

> I missed the part where this has anything to do with saving time

It lets you put the non-car stuff closer together, so you're traveling less distance to get to the same place. It requires urban design, not just a single person switching between modes of transit.

(Although switching to cycling can often make transit both faster for you and the people around you in a city because you aren't as affected by traffic and don't create as much traffic)

Re: Earth is now heating up twice as fast as in previous decades

#137

Post by tsoukase »

The huge energy consumption of the past decades was pushing temperatures up, especially the fastest rise of the mightiest power in history, China (not to blame them though, cudos to them). We have not reached peak everything yet (CO2, energy, steel etc).

We must and we will adapt, if that means renewables, migration or partial extinction. There is no other choice because this is the law of evolution.

Re: Earth is now heating up twice as fast as in previous decades

#138

Post by rolph »

scoofy wrote: post #116
frankest wrote: post #89

Imagine an alien with extreme tech capabilities is pointing a heater at the earth. Now react appropriately: - model and build temperature resistant crops. - harvest energy from the heat - create resilience in social governance to enable safer movement of people with education to enable quick adaptation. - build energy resilience everywhere - including in and especially in desert areas. - more constructive ideas. Don’…

>harvest energy from the heat This is not a thing. This is just entropy.

https://en.wikipedia.org/wiki/Thermoelectric_effect#Seebeck_...

we have this interesting thing called a thermoelectric generator,that converts thermal gradient to electromotive force.

https://scienceimproved.com/how-to-generate-electricity-ther...

so yes harvesting energy from "the heat" is a thing, if you gate the dissipation of heat from the source to a sink.

these are already used to scavenge heat to drive fans, lights, phone chargers, and pumps.

Re: Earth is now heating up twice as fast as in previous decades

#139

Post by irishcoffee »

surgical_fire wrote: post #91
irishcoffee wrote: post #57

Earlier quoted context omitted.

Per capita doesn't mean nearly as much as total. If the countries above the US were instead on par or below the US as it relates to totals, we wouldn't have the same issue we have now.

If the US went to zero we also wouldn't have the same issue as we have now. Why should the US be entitled to pollute the world while everyone else has to live without any confort?

Per capita, the us murders 0.2 people per 10k persons, ~350million total population.

Per capita, china murders 0.15 persons per 10k people, ~1.4billion people.

Who murders more people?

Re: Earth is now heating up twice as fast as in previous decades

#140

Post by scoofy »

rolph wrote: post #138
scoofy wrote: post #116

Earlier quoted context omitted.

>harvest energy from the heat This is not a thing. This is just entropy.

https://en.wikipedia.org/wiki/Thermoelectric_effect#Seebeck_... we have this interesting thing called a thermoelectric generator,that converts thermal gradient to electromotive force. https://scienceimproved.com/how-to-generate-electricity-ther... so yes harvesting energy from "the heat" is a thing, if you gate the dissipation of heat from the source to a sink. these are already used to scavenge heat to drive fans, l…

What “thermal gradient”??? Climate change exists within a greenhouse. We are raising the ambient temperature. Even if you could do something like that at scale (ha!), I’d love to know where your continuous cold sink comes from in an enclosed system.
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