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1answer
18 views

Why are soft plastics inferior to hard plastics?

In the place where I live, hard plastics (e.g. bottles) are valued more and easier to recycle whereas soft plastics (e.g. wrappers), even of the same type (say, HDPE) are valued much less, and it's ...
2
votes
0answers
13 views

Why does color matter for PET recycling but not for HDPE recycling?

Why does color matter for PET recycling but not for HDPE recycling? I'm not sure about other countries, but in the place I live in the recycling plant that receives PET from recycling bins I use only ...
2
votes
1answer
24 views

How do they recycle in Belgium?

I came across a passing mention of a peculiar way they recycle in Belgium (it's not paywalled as you may think, use Google Scholar). They say they sort out plastic containers, cans, and tetrapaks. But ...
1
vote
0answers
20 views

Is PEX piping more energy efficient than copper?

My house has two bathrooms, with roughly the same distance of pipe from the water heater to each (see diagram below). One was added during a renovation and has PEX piping from the point where they ...
0
votes
1answer
69 views

Is litter better than an unmanaged landfill?

In landfill conditions, it takes everything forever to decompose, especially plastics. Proper lining, methane capture, it's what developed countries have, and most countries are not developed. So ...
3
votes
1answer
42 views

Is there an efficient method to generate electric power from wood on a residential scale?

1 kg of firewood is said to have around 4-5 kWh of energy. Some wood stoves claim a burning efficiency up to 90%, and I understand this means how completely the wood is burned. Pipe loss is not ...
1
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0answers
21 views

How is composting different from regular aerobic decomposition?

How is composting different from regular aerobic decomposition in terms of its (negative?) GHG footprint? Or are those the same thing?
3
votes
1answer
55 views

How should EV drivers prepare for winter driving?

On Monday night, a snowstorm in Virginia stranded drivers for up to 48 hours on Interstate 95. An op-ed this morning in the Washington Post argued that it would have been much worse if all the cars ...
2
votes
2answers
42 views

Combining fans and AC

Would blowing a fan on yourself and easing the AC save energy on hot days? Assume we keep the feels-like temperature the same. For example, 23 °C with still air and 28 °C with a fan may feel similar. ...
1
vote
0answers
31 views

How much more sustianable is breastfeeding than formula feeding?

Today, breastfeeding is recommended for all newborns due to the health benefits for both the infant and the mother. In addition to health benefits, it is cheaper than formula feeding, and once ...
-1
votes
1answer
42 views

Can the society label the development of the recyclable nuclear synthesis processes as sustainable and green?

The green technologies require a lot of rare earth and precious chemical elements which are composed of the heavy nuclei that (beyond iron) are quite rare on our planet and our Solar system. All those ...
1
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2answers
39 views

How is recycling of plastics beneficial to the climate?

How is recycling of plastics beneficial to the climate? Using PET flakes, for example, reduces your indirect demand for oil extraction, it's good. But if you break them down to monomers during ...
17
votes
4answers
3k views

Is there definitive, authoritative scientific/academic consensus about the sustainability and greenness of nuclear energy?

I am reading https://www.politico.eu/article/eu-nuclear-energy-gas-green-climate-technology/ that this (2022) year the EU will have to decide on the labeling of nuclear energy - is it sustainable and/...
3
votes
1answer
81 views

Why is composting of food waste "better" than burning it?

Introduction It seems natural (promoted by the media) that composting is a form of recycling while burning is *no* form of recycling. In this question I'd like to question this way of thinking. ...
0
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2answers
24 views

What is the difference between a hybrid vehicle and a plug-in hybrid vehicle?

What is the difference between a hybrid vehicle and a plug-in hybrid vehicle? And why are plug-in hybrid vehicles better than regular hybrid vehicles, even as good as EVs?
1
vote
1answer
30 views

What is the difference between organic and syntropic agriculture?

What is the difference between organic and syntropic agriculture? I watched a few of videos on the latter but couldn't get the gist of it. Is it like planting crops among trees or something?
2
votes
1answer
31 views

Meta-campaigns for sustainable building management?

(Sorry if this is the wrong place to ask this. I considered politics--maybe that is better.) I have seen various groups that try to set up small campaigns targeted at individual organizations to ...
2
votes
1answer
18 views

Does landfill paper constitute a net source of GHGs or not?

I thought it's scientific consensus that landfill paper, as any organic matter with low levels of lignin, is a net source of GHGs. But this Canadian paper of 2008 contains this unusual train of ...
1
vote
2answers
26 views

What is the difference between energy-from-waste (EFW) and cogeneration?

What is the difference between energy-from-waste (EFW) and cogeneration, and why is the latter more efficient (let's compare electricity to electricity)? Aren't both essentially incineration? See ...
0
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0answers
5 views

What is "Recycled Input Credit" and how is it different from a simple difference of emissions between recycled and virgin manufacture?

What is "Recycled Input Credit" and how is it different from a simple difference of emissions between recycled and virgin manufacture (I read the EPA's definition, it didn't help)? Why do ...
0
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0answers
22 views

Are paper products collected and recycled separately in the US?

I don't understand this (from WARM v. 15) Most paper products are modeled as being recycled in a closed loop (e.g., old newspaper is recycled into new newspaper). Magazines/third-class mail, ...
2
votes
1answer
40 views

What percentage of wood is harvested for production of paper products?

What percentage of wood is harvested for paper and cardboard production? I need more or less recent data please. What I found is a 1999 publication that calculated that it's 42% excluding fuelwood. It'...
0
votes
2answers
19 views

What do developed nations do with organic municipal waste?

What do developed nations do with organic municipal waste? Are there separate receptacles in addition to bins for plastics, glass, metals, etc.? Is organic waste then transported for anaerobic ...
1
vote
2answers
111 views

What do we do with all the coal mines?

Coal is going to be the first victim of the green energy revolution as the least sustainable kind of fossil fuel. What do we do with all the mines, both surface and underground ones? You can do quite ...
2
votes
1answer
46 views

Should we recycle paper products?

Should we recycle paper products given what this paper pointed out? In "Limited climate benefits of global recycling of pulp and paper" (pdf) they write: We [...] show that additional ...
-5
votes
0answers
25 views

what are e waste problems and what needs to be done?

I want to ask what are electronic waste problems and what are the precautionary measure we should choose to overcome e waste problems.
2
votes
2answers
71 views

Can and should we outsource the computing power of our personal devices to the cloud?

What does it mean? What does Circle Economy (a nonprofit) suggest? Can and should we outsource the computing power of our personal devices to the cloud? It sounds climatically reasonable (it's more ...
0
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2answers
65 views

I can get cast-iron engine heads from junk yard and my wood stove has flat top so I can safely stack the heads on top of my stove to add thermal mass?

I could build a steel box and fill it with the heads, then put a steel plate on top of that, so I can still use my heat powered fan on it as well?
0
votes
1answer
44 views

If we can capture landfill gas, why can't we capture cows' burps and use them as a source of energy too?

If we can capture landfill gas, why can't we capture cows' burps and farts and use them as a source of energy too? It's the same methane after all
0
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3answers
46 views

When the topic of transport decarbonization comes up, all I hear is batteries and hydrogen. But what about renewable natural gas (RNG)?

When the topic of transport decarbonization comes up, all I hear is batteries and hydrogen. But what about renewable natural gas (RNG)? The milage is better, less energy loss, as I understand. You can ...
1
vote
1answer
44 views

Power company consistently reports higher consumption than solar PV system

My power company has very consistently reported 45kWh ± 5% per month higher consumption than my grid-tied Enphase system data over the first 6 months of my installation. Why would that be? Is my power ...
0
votes
1answer
44 views

Researchers found a way to turn plastic into proteins. What is the impact of it?

I found that story on the site "I Fucking Love Science": https://www.iflscience.com/chemistry/method-that-turns-plastic-into-proteins-wins-12-million-prize/ Do you think this will solve the ...
2
votes
1answer
27 views

Choosing heat sources to use with the current UK energy mix (carbon footprint)

This is related to Relative carbon footprint of gas or electric heating (UK) but with 2 key differences: things have changed in the 7 years since it was asked; I'm asking about the use of the systems ...
1
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0answers
25 views

Can a landfill be a source of microplastic in waterways and running water?

Can a landfill be a source of microplastic in waterways and running water? These studies are paywalled and, I assume, don't answer the following question: can microplastics pass through landfill ...
1
vote
1answer
81 views

What's the difference between a synthetics mode and a cotton mode of a washing machine?

What's the difference between a synthetics mode and a cotton mode of a washing machine, and does it have any environmental relevance? I think it's better to put it all together and wash in one go than ...
3
votes
2answers
41 views

Would choosing coffee alternatives reduce deforestation? What is the deforestation rate associated with the coffee industry?

The new CNN Business video This startup is making coffee...without coffee beans describes a recent entry into the coffee alternative market. They use no coffee beans and start with date pits, ...
3
votes
2answers
48 views

Is burning wood for energy less bad than forest fires?

Forest fires are considered a contributor to global warming, but using firewood is considered carbon-neutral. I'm not sure I understand it. In both cases, only the carbon that had been captured ...
2
votes
3answers
98 views

How "green" is using wood as a material?

There are simultaneous calls for not using paper in any form because it causes deforestation, but when it comes to building and making products from wood it is considered environmentally sustainable, ...
0
votes
1answer
80 views

Is it true that cannabis is not a sustainable recreational drug?

Is it true that cannabis is not sustainable, for example because of high water consumption? If so, what are more environmentally friendly alternatives? Magic mushrooms, maybe?
0
votes
1answer
31 views

Which CDR options, on balance, are the most feasible?

Reading the latest IPCC report, I came across an interesting overview of carbon dioxide removal (CDR) options (5SM-16 onwards). I've never heard of some of them: it includes biochar, ocean ...
1
vote
2answers
26 views

How is biochar production as a CDR method different from crop residue burning?

How is biochar production as a CDR method, which is good, different from crop residue burning, which is bad? Does it have something to do with oxygen availability?
1
vote
1answer
41 views

Is mercury still found in modern e-waste?

Is mercury still found in modern e-waste? I need an authoritative reference, please. I did try to research it on my own, but got conflicting information.
0
votes
1answer
46 views

Under what circumstances are concentrated solar power plants more feasible than conventional solar panels?

Tell me about concentrated solar power plants. Under what circumstances are they more feasible than conventional solar panels? It seems to me, a layman, that there are way too many energy transfers ...
-3
votes
1answer
53 views

Do solar panels generate more electricity in hot or cold climate?

Do solar panels generate more electricity in hot or cold climate? Who is right (sorry for the messiness, I currently don't know how to take a long screenshot)?
3
votes
2answers
93 views

Is cutting down trees and building something from them good or bad for the climate?

I still don't fully grasp the climate impact of lumbering (unless its purpose is burning the wood for energy or making space for pastures which is obviously bad). Is cutting down trees and making or ...
3
votes
1answer
63 views

What are the most viable options for long-duration storage of large amounts of energy?

With renewables being in large part weather-dependent, the issue of energy storage is slowly moving to the center stage of the incipient net-zero economy. Lithium ion batteries are kinda good, but ...
1
vote
1answer
40 views

Solar panels - series vs parallel and microinverters

Problem: I have six 100 W panels wired in series on the roof of my van. I can only get 180 W maximum out of my entire setup (with a Canadian winter, I'm expecting at least 300 W), and I think the ...
14
votes
5answers
5k views

For electricity use, which is better: Turning all appliances on at the same time, or spread out?

In the 1980's, a company I worked at owned a stand-alone building, and they were concerned about their electricity bill. It seemed to be higher than it should be. A manager called the electrical ...
0
votes
1answer
65 views

Should I down cycle something myself instead of giving it away knowing it will end up in landfills?

I currently live in an Eastern European country where conscious consumption and recycling is uncommon. For context, I am sometimes frown upon by the cashiers when coming to a grocery store with a ...
2
votes
2answers
75 views

Can we capture carbon from decomposing plants?

When plants grow they absorb carbon-dioxide from air by photosynthesis, but when they die and decompose, then eventually all the captured carbon dioxide in them returns back to the atmosphere. The ...

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