All Questions

7
votes
1answer
74 views

How to test whether a teabag has polyester fibres or not, without waiting for it to compost?

Some teabags are made (or partially made) of polyester fibres, and stay intact in compost after everything else has broken down. Is there a quick way to test whether a teabag contains polyester, as ...
6
votes
1answer
63 views

How to compensate past CO₂ emissions

How would I compensate 250 tons of CO₂ emissions that I've created in my life? Is there a sustainable way? I know trees can absorb a lot of CO₂, but once they die, the absorbed CO₂ is back in the ...
8
votes
2answers
172 views

More sustainable pick-me-up: can of coke or cup of tea/coffee?

Question: which has a greater embodied energy: a cup of tea/coffee or a can of Coke (or Pepsi, or other caffeinated soft drink) -- or maybe some other stimulating drink? I have made some estimates of ...
5
votes
1answer
50 views

Size and reliability of inverter for refrigerator in an off-grid tiny home

I am building an 'Off Grid' tiny home, with my primary energy supply from solar + battery storage. I intend to utilise low voltage everything possible with the exception of a standard home washing ...
0
votes
1answer
68 views

Led powered solar panels? [duplicate]

I've read multiple threads about this but I've yet to come across an answer to this question.... would it be possible to have a small bank of led lights power multiple solar panels? For instance, if I ...
5
votes
0answers
89 views

Research on consumer behavior and waste management

I am teaching a class on waste management to students who are primarily environmental management masters students. For one of the sessions I plan to discuss the role of consumer/waste generator ...
3
votes
2answers
696 views

How much electric energy would a studio apartment use per month if everything inside is powered by electricity (heater, water, stove, etc.)

How much electric energy, on average, would a typical one-person studio apartment consume per month in the winter if everything inside is powered by electricity? Additional Information: Apartment ...
6
votes
4answers
146 views

How can I reuse or upcycle used, leftover, tiny bath soap bar bits?

After the bath soaps have been used, tiny bits remain. Note that this is not about re-using half-used or little-used soaps such as found in hotels. I am aware there are charities such as Sundara Fund ...
4
votes
1answer
97 views

How much, if any, does resolution effect the net power consumption of watching online video?

I watch a lot of online video. I'd assume that for example videos on Youtube in 720p use less power than the same videos in 1080p. I think this might be because: more power is used by sending network ...
5
votes
1answer
66 views

Non-Biodegradable Glitter

How can I dispose of a box full of non-biodegradable glitter in an ecologically friendly way? Everything i read about melting or burning plastic gives me conflicting information about toxins and i don'...
6
votes
3answers
85 views

How much of dropped fruit is wasted? How much could be consumed, ideally?

Fruit might be dropped due to many reasons including premature fruit drop and disease. I wonder how much fruit goes to waste which could otherwise be picked and consumed. Are there any statistics ...
5
votes
3answers
128 views

Newer heat pump vs new space heaters in Seattle winter

I see similar questions to this one, but mine is slightly different, so here goes: I live in Seattle, where the winters are mild, with days in the 40s°F (4-10°C) and nights in the low 30s°F (around -...
3
votes
1answer
287 views

Which has a smaller footprint — canned or frozen vegetables?

When fresh vegetables aren't an option, many sources indicate that frozen vegetables are generally better than canned (see here, here, and here, for example). However, how do the environmental ...
6
votes
4answers
112 views

Will bitcoin help us to decentralise our communities and help us live a more sustainably

From a little bit of research on bitcoin, I have discovered that they remove the centralised middle man from individuals transactions ie. a Bank, PayPal, ect.. and make it easier to transfer money ...
2
votes
1answer
109 views

Is it feasible to use constructed wetlands for greywater treatment in places where lakes freeze for more than half of the year?

Let's say village-sized community discharging grey water from shower water, human and animal wastes and laundry water. These villages use modern detergent and medicine (especially antibiotics), have ...
6
votes
1answer
120 views

Processing grey water (sink, shower) in off-grid situation

What is the best - cost, minimising negative environmental impact, simple - way to process grey water outflow? I plan to build an off-grid cabin, I will be harvesting rainwater, using it in my sinks/...
5
votes
1answer
59 views

Heat Recovery Ventilator HRV, metal vs paper core?

Which one is more efficient and has longer operating life, thin metal or nano paper core in a HRV? It will be used in a Nordic country. TL;DR I'm searching for a heat recovery ventilator. I am not ...
3
votes
0answers
70 views

Environmental benefit of recycling small cables from electronics and holiday mini lights?

For electronics, I've watched some online videos explaining commercial shredding operations and some home based scrapper videos showing how they strip insulation from common household electrical ...
7
votes
1answer
139 views

What is this candy wrapper made of? Solely plastic or mixed with something else?

I am an avid recycler - whenever I get the chance to recycle, I do it. The only problem is, I can't mix materials when recycling. I want to recycle the following: It's wrapping for candy - in this ...
6
votes
3answers
101 views

Is there any way to recycle air-pollution into fertilizer?

Vehicles and Factories produce air-pollution like Nitrogen Dioxide (NO2) and Sulfur Dioxide (SO2). Plants use Fertilizer with those same compounds (NO2 & SO2) So, is there any method to capture ...
5
votes
1answer
82 views

Why the eco-friendly soy ink is not abundent on the market?

From time to time I see on different papers "Printed with eco-friendly ink," so I assume that it is the soy-based ink. I have read a bit about it, and the opinions about soy-ink being eco-friendly are ...
4
votes
0answers
403 views

Ammoniacal Nitrogen (NH3-N) test and sources of ammonia in natural bodies of water

One parameter that's involved in water quality assessment is ammoniacal nitrogen (NH3-N), a measure of ammonia. Where does ammonia come from in natural water sources, such as a river? What factor ...
-1
votes
1answer
206 views

How much money to live “off-grid”?

How much money would you need to live off grid in a wooden hut in Alaska or somewhere else remote on Earth? Let's presume we do this at 30 years old and live to 100. Only costs I can think of are ...
1
vote
0answers
31 views

Is going paperless really that much better for the environment [duplicate]

Say you want to read some document, like an newspaper article, If you read it online you still have to power a screen, which is powered by a computer or mobile device, which these days are becoming ...
2
votes
2answers
96 views

Is sustainable living basically the opposite of industrialisation

Industrialisation and globalisation seem to want to just mass produce everything from products to food. The agricultural lobbing groups are given power from the government and do a lot of bad things ...
1
vote
3answers
128 views

Mindset change in developing countries

I've travelled a bit in Africa, Middle East, and Asia. What strikes me, in all of these places, is that often in the most poverty-striken areas, things that people look up to are big cars, and ...
4
votes
1answer
99 views

Energy saving “bonus” for apartment renters

I live in an apartment building with three units, but only one gas meter, one electric meter, and one water meter. As a result, there is no inherent incentive to save water and energy, and no fair way ...
4
votes
2answers
478 views

Relative merits of 'milkman' glass vs. 'supermarket' plastic milk bottles?

(A question with looking for answers from a UK perspective, preferably) Does anyone have any pointers to, or have the knowledge to answer, the question of the larger-scale environmental arguments ...
2
votes
1answer
73 views

How to encourage turkeys onto my land without encouraging other wild life?

I am a homesteader. When I first moved to my property, I started a gaggle of turkeys and for about two years regularly fed them in the morning. It was nice because my kids got to see them and around ...
5
votes
3answers
94 views

What are ideas to change the advertising system towards sustainability?

Recently I've heard degrowth proponents often mention how they found the whole advertising industry problematic and the topic seems to be treated as if advertisements themself were the problem. I ...
7
votes
2answers
237 views

Is there a sustainable agriculture certification that sees GMOs as potentially beneficial?

I keep dreaming of a certification body that has stringent and ever-evolving standards for a sustainable agriculture that looks after the environment and humans, with a rigorous but open mind when it ...
6
votes
5answers
151 views

How to sustainably dispose of or break down used cooking oils?

I have recently wondered what I should be doing with my used kitchen oils having seen a news article about an enormous fatberg clogging the sewer in London. Obviously putting it down the sink really ...
4
votes
2answers
139 views

Being a sustainable Digital Nomad in a Van - First Steps

I am considering the purchase of a retrofitted Ford Transit with a Diesel motor to have a more flexible option for travel and accomodation. Since I aspire to reduce my footprint (and increase my ...
14
votes
1answer
439 views

How do UTZ, Rainforest Alliance and Fairtrade certifications compare?

When buying chocolate or coffee, I like to make sure that I choose the better option for farmers and the environment, especially because it always comes from countries that don't fare as well ...
7
votes
1answer
133 views

To what extent (if any) are electric vehicle batteries recyclable?

Are there any existing procedures for the recycling of electric vehicle car batteries, and if so what are they? In particular I'm interested in those used in the Volkswagen E-Golf, though general ...
7
votes
1answer
332 views

What's the carbon environmental footprint of good old cash?

It's known that bitcoin has a high carbon footprint [1]. Some have started to compare the environmental footprint of a bitcoin transaction and a standard visa transaction [2]. What is the carbon ...
7
votes
1answer
103 views

How to attach more sources of energy to your charge controller

Lets say I have an existing solar power system. If I want to add a wind turbine or I get more solar panels, is it as easy as just attaching the new sources of energy to my charge controller (in ...
5
votes
0answers
52 views

Which is more sustainable for eyewear/spectacles : Glass lenses or Fiber-plastic lenses?

I am about to get my first pair of spectacles. From where I am, glass lenses need a frame. Fiber-plastic lenses can be frameless. It's well known Fiber lenses are much more durable and longlasting. ...
0
votes
1answer
119 views

Is it possible to reverse the air flow of a roof turbine/whirlybird?

I am currently working on a device that requires omnidirectional air currents (e.g. breezes/winds) to be directed downwards through a vertical tube. I think it would be a very similar design to a ...
2
votes
0answers
29 views

For the exactly same income, does a person pollutes more when living in a big city or in a small town? [duplicate]

I had a recent argument with a coworker (we are both engineers) that the amount of pollution (trash+water+air) generated by a person increases with the person's income (we both agreed on that) but my ...
5
votes
3answers
147 views

For the exactly same income, does a person pollute more when living in a big city or in a small town?

I had a recent argument with a coworker (we are both engineers) that the amount of pollution generated by a person increases with the person's income (we both agreed on that)... but my coworker ...
5
votes
2answers
63 views

Will customer preference drive adoption of energy storage the same way as EVs and solar power?

A recent blog post lampooned the fact that the International Energy Agency has under-estimated the growth of solar energy in every single one of their predictions from 1994 to 2016. In the electric ...
3
votes
1answer
138 views

Is it worth washing a plastic bag to reuse it?

As I ask myself the question and start thinking about it, I realise it might be obvious that it is worth it. But I thought I'd ask anyway as someone might have a nice analysis to share. The other day,...
10
votes
2answers
165 views

Can solid dog waste be safely added to a backyard composting heap?

My dog poops in my backyard and the poop is either a) forgotten or b) picked up in a biodegradable bag and thrown in the trash which is ultimately incinerated for electricity by my municipality. Both ...
-1
votes
2answers
123 views

Will Koolatron cooler cool warm stuff?

We don't have any electricity, so we're thinking of purchasing this Koolatron cooler. Most of the drinks I put in it (refreshment cans, water bottles, etc) will be warm/room-temperature. Will it ...
0
votes
3answers
9k views

How long to charge 12v deep cycle battery?

How long would it take to charge this deep cycle battery (Amazon link) with a regular household electricity plug? Thanks.
2
votes
1answer
86 views

How long will a 12V Koolatron compact cooler last with 12Ah battery?

I'm thinking of purchasing a Koolatron P20 compact cooler and this ExpertPower 12200 battery How long will cooler last with this battery at full charge? Is this the correct battery to use for this? ...
9
votes
5answers
194 views

How can I make my family understand my CO2-emissions-related hesitation to fly in order to spend time with them?

I live in another country, approximately 2000 miles away from my family. Now, my parents have really hard time understanding the kind of personal sacrifices which are necessary to keep the world a ...
5
votes
2answers
110 views

Can you use worm bait for a garden

I'm starting a garden and wondering if worm that are sold for fishing bait can be used in a garden? I'm adding corn meal peels, manure, etc, into the soil.
5
votes
4answers
487 views

Solar/battery powered portable freezer or fridge?

Well, last week we got hit by cat 5 hurricane Maria. So I'm thinking, one of the things I miss the most right now is ice. Considering the amount of sunlight that we have, does a battery-powered ...

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