A_A @ A_A @lemmy.world

This Earth, the only true home i ever had and will ever have, is not my wor

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2 yr. ago

Thanks. This is a nice and striking image.

But I do believe it contains some illusion in that different materials have different impacts on the environment. For instance, aggregates and parts of concrete and asphalt are way less damaging than cements, tar, bricks, plastics, metals ... all requiring more transformation which are more damaging for the environment.
So the problem is not the mass itself but rather the impact on the environment.

Exactly. We start having problems at some point if, for example, we built towns with too much asphalt + too much concrete and not enough trees and green spaces : this is undeniable. So, let's be careful about this.

Yes, of course I know for cement ... but you know : my comment was about gravel (agregates in the picture) and in concrete you have aprox. 10% cement.
(i have also wrote another comment about cement and carbon dioxide elsewhere in this post)

from your link :

(concrete ...) carbon dioxide emitter (...) 2.8 billion tonnes (in 2019)

Well yes, this carbon dioxide emitted during cement production is the problem : if we could manufacture cement using solar power and capturing CO2 it wouldn't be such a big problem.

Anyway, my comment was more about rock and not about cement. ... and I agree with you that it's important to keep people interested in fighting bad dangerous products of human activity.

What I would like people to read in my previous comment is that when you make chemical changes or phase changes you can create more dangerous stuff than if you have an inert solid substance for which you only do a mechanical physical change.

Anyway, there are more important things ... I don't want you to waste too much time on this.

I wish you happy holidays (despite the state of the world). Take care.

Not "Human Detritus" no :

(...) billion years for the first living (...) to grow (...) into the 1.1 trillion tons of biomass (...)
But all of that is outweighed by (...) concrete and other material that humans have produced (...)

Most matter in concrete is sand and gravel and is not different just by the fact it's encapsulated in cement paste.
We humans do not "produce" rock. We do break it into gravel and this doesn't change its nature. By weight, most of the stuff we have "produced" is gravel.

Let's be responsible with the real garbage and dangerous stuff we "produce" without being alarmist.

Okay for Walmart. Now, is it the same or worse with Amazon ?

Today I learned :
https://en.m.wikipedia.org/wiki/Ward_Cunningham#Cunningham's_Law
Cunningham is credited with the idea: "The best way to get the right answer on the Internet is not to ask a question; it's to post the wrong answer."

i don't get it : they say who she is, then say ; we should not speculate about who she is :

Natalie Rupnow, killed ... Police urge the public to avoid speculation regarding Rupnow’s identity

... & hacking : Harketing !

misleading title : out of 11 premiers in Canada, only 1, (who has no leverage on this), is talking about that.
So, reality is very far from what the title leads to believe.

Pegasus is worse (by public knowledge).

😁 i keep this part :

One possible explanation for the Hubble tension would be if there was something missing in our understanding ...

Miraculous time for all those innocents tortured in Assad's prisons and liberated since this toppeling. "A blessing from God (Allah)" they will say.

i am very optimistic for once for Syria

anti - smock - ism !

Everyone is safe from Pegasus ...
Except cell phone owners (which is most everyone)
Exception to the exception : people who know about this excellent FOOS tool (and know someone who can use it) - - thanks

medical system in USA is amongst the worsts

What i read [and corrected] from the article :

"The hacking campaign [group], nicknamed [ by Microsoft ] Salt Typhoon by Microsoft,
[ this actual campaign of attacks ] is one of the largest intelligence compromises in U.S. history, and not yet fully remediated. Officials in a press call Tuesday [ 2024-12-3 ] refused to set a timetable for declaring the country’s telecommunications systems free of interlopers. Officials had previously told NBC News that China hacked AT&T, Verizon and Lumen Technologies to spy on customers."

i once saw Sarah Connor getting ice cream in her waitress' uniforms' pocket !

(...) Geological phases (...)
First Phlegraean Period. (...)
It is thought that the eruption of the Archiflegreo volcano occurred about 39,280(...) years ago, erupting about 200 km³ (...) of magma (500 km³ (...) bulk volume) to produce the Campanian Ignimbrite eruption. Its Volcanic Explosivity Index (VEI) was 7 and it left a large part of eastern Europe covered in ash.
https://en.m.wikipedia.org/wiki/Phlegraean_Fields