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1answer
61 views

What's the carbon footprint of watching IPTV?

There are some topics discussing the carbon footprint of an email: What’s the carbon footprint of an email? https://twosidesna.org/US/The-Carbon-Footprint-of-Email-is-quite-large/ However, I found ...
4
votes
3answers
84 views

Should leaf composting be separate from food waste?

The city where I live is running a campaign to keep leaves out of the streets, where they contribute to phosphorous in storm water run-off causing lake pollution. I'd like to avoid the need to send/...
2
votes
2answers
89 views

Are there any unsustainable supply-chain issues unique to hydrogen fuel cell vehicles?

I was recently reading that lithium mining for electric vehicle batteries is wreaking havoc on deserts in Chile. One proposed alternative to EVs in the search for a replacement for petroleum-fueled ...
2
votes
1answer
94 views

How to work around a supposed Huawei SUN2000L-5KTL inverter throttling issue

I have a PV system with a WEG SIW300H M050 inverter, which is simply a rebadged Huawei SUN2000L-5KTL (link to the manual). Its rated output power is 5000 W while its nominal apparent power is 5500 VA. ...
3
votes
4answers
115 views

How can I recycle safety razor blades?

I recently switched to a safety razor because It's cheaper in the long run, even if I change blades more often disposables are a recycling nightmare - (metal bonded to plastic) Of course eventually ...
3
votes
1answer
73 views

Which of disposal or production of leather has a greater environmental impact?

Several times I've heard of people supporting leather against non-animal alternatives, saying that since animals are killed for meat we have a lot of skin to use and that it would be bad not to use it....
4
votes
2answers
350 views

Optimal aspect to position air source heat pump (south/east/west)?

There is much conflicting information on this, e.g. Nu-heat: Bear in mind that your heat pump will need to work harder if it is situated in a cooler, north-facing, shady position, than if it is ...
3
votes
3answers
93 views

What would happen to greenhouse gas emissions if no more humans were born?

While discussing global warming and climate change, I have often seen people say that overpopulation is the real problem and that the biggest thing anyone can do is have one fewer child. Some people ...
0
votes
1answer
37 views

heat pump ecodan noise: constant or variable

I have just seen an Ecodan PUHZ-W85VAA in action at the house of the salesman. It running very quietly, but I wanted to know will it get louder as the weather gets colder? In other words does the pump ...
3
votes
3answers
117 views

Why are new cars being built in the UK / europe without Start-Stop technology when it seems it can lower pollution?

Everything I have read online seems to indicate that start / stop technology reduces air pollution, is (marginally) better for the engine, reduces emissions and is more economical (link1, link2, link3)...
4
votes
2answers
95 views

Emissions offsets versus avoidance: can they be compared?

I'm going to be traveling from London to Toulouse next year. I could take a flight for around £100, or a train journey for £170. The emissions for the flight would be about 500kg, which would cost ...
6
votes
3answers
144 views

Plane and train greenhouse emissions - comparison taking infrastructure in account or not?

In the news or various other places, we see often that train travel produces significantly less greenhouse gas than air travel, without much information about how this is calculated. For example here :...
3
votes
3answers
91 views

Does Start / Stop technology in cars have an impact on air quality and by how much?

I have repeatedly heard from various car enthusiasts that start stop technology has no benefit in improving air quality (or the tiniest smallest negligble benefit). Does it have an effect and how much?...
0
votes
1answer
45 views

What are some leguminous food trees suited for a Mediterranean climate?

I can think of carob, which already grows in the area. What other kinds would be a good source of nutrition and thrive in a Mediterranean climate with little annual rainfall? Other tree suggestions ...
3
votes
3answers
79 views

Sustainably waterproofing a rain jacket

My raincoat was fully waterproof when bought some 8 years ago. Now it's like a cotton blouse in that it soaks up water immediately. I have washed it with technical wash and sprayed it with ...
9
votes
5answers
197 views

How much land would be covered by the plants that turned into the fossil fuels humanity has burned?

Many climate deniers suggest that humanity is too insignificant to impact the global climate. As a visualization to counter this claim, I thought of the following exercise. How much coal, oil, and ...
4
votes
2answers
97 views

Which are the 66 (65?) countries that vowed carbon neutrality by 2050 at the September 2019 UN Climate summit?

I couldn't find the list anywhere. See: Straits Times -- 66 countries vow carbon neutrality by 2050: UN Sixty-six countries have signalled their intent to achieve net zero carbon dioxide emissions ...
3
votes
1answer
191 views

Approximate CO2 emissions for shipping a parcel from one location to another

First of all, I know it is impossible to answer this question accurately. But that is not the point. An approximation will suffice. For a project I need to display the CO2 "cost" for shipping a ...
5
votes
5answers
2k views

What is the climate impact of planting one tree?

I was reading the news today, and noticed that in the UN Climate Summit, it was decided that over 11 billion trees will be planted to sequester carbon dioxide from the atmosphere. I was thinking that ...
2
votes
1answer
105 views

Why don't mineral water cans carry a deposit label?

I've been putting in the recycling bin all our "sparkling water," "mineral water," and unflavored Canada Dry cans. But then I wondered if I could return them to the grocery store for deposits. ...
4
votes
2answers
94 views

What are the most sustainable options for filtering tap water for drinking?

I live in Europe (Belgium), where tap water is generally safe for drinking, but may vary in hardness and taste. It's pretty hard and not so good in my area, so I've been using (Brita) water jugs for a ...
1
vote
2answers
88 views

Paper packaging once a day or plastic every second day?

I buy a lot of cottage cheese. There are two kinds of packagings available: paper wrappings, which I buy one piece a day plastic bag, of which one pack is enough for two days Assuming that I can't ...
6
votes
1answer
1k views

Are there any adverse impacts if I keep WiFi router on all time?

I searched Google only to come up with various results with different views. Is there any official or reliable source that states the impacts of keeping the WiFi router on regarding environmental ...
3
votes
3answers
403 views

Pros and cons of solar panels over a parking lot?

What are the net benefits to clearing a plot of trees, or grass to install solar panels? Isn’t it better to install the panels over parking lots?
2
votes
2answers
172 views

Is it better to leave your computer on?

This answer to a question on computer power use suggests that computers last longer when they are not frequently shut down. The answer is from 2014, and I do remember hearing this advice in the past. ...
3
votes
1answer
55 views

Do light fixtures with small solar panels require direct sunlight?

I purchased an Osram Ledvance DoorLED Solar product which charges its own batteries and turns on automatically at nighttime to provide light. It requires a 7 hour minimum charge time. When there is ...
3
votes
0answers
62 views

Is Tawashi really suitable for dishwashing?

As a step to reduce my waste I planned to make a tawashi to replace artificial dishwashing sponges. I had a t-shirt not suitable to be donated, waiting to be upcycled, so I made t-shirt yarn out of it ...
3
votes
1answer
106 views

Distinguishing between polyethylene and polypropylene plastic food packaging for recycling

I want to recycle as much food packaging plastic films as possible (I'm willing to clean and dry them). As far as I know, food packaging films are only made from 3 types of plastic: polyethylene (PE), ...
4
votes
2answers
158 views

How to sell orange squash without plastic bottles?

Does anyone know how they used to sell orange squash before plastic bottles were invented? (Or perhaps no-one did?) And if there was a ban on disposable plastic, how would orange squash be sold? In ...
-1
votes
1answer
82 views

Is the cost of non-fossil fuel LCOE misleading?

Natural gas is a waste product. Its "cost" is almost entirely profit. All renewables can do is compete down this margin, they can never beat gas. If renewables are cheaper that just means some ...
3
votes
2answers
44 views

Life cycle analysis comparing natural gas and propane prior to combustion?

I am choosing between natural gas and propane for a boiler. I see a discussion here where the accepted response primarily deals with the CO2 released during actual burning of the gas. I am curious to ...
6
votes
2answers
180 views

How does the climate impact of an LNG-powered cruise ship compare to flying?

Taking the Iona as an example, it is claimed that "The cruise ship will have a reduced carbon footprint with zero sulphur and nitrogen emissions." Sulphur and nitrogen, while pollutants, are not ...
2
votes
0answers
42 views

Solar Install Flat Roof

I want to install 23 305w panels on my roof. It's a flat roof constructed with 2x8 beams spaced at 24". There is no snow load to consider and we get occasional wind and rain storms a few times per ...
3
votes
2answers
131 views

Which printer font can I use to reduce ink consumption without impacting readability?

Apparently Arial isn't a very efficient font, when it comes to ink consumption. This article claims Times New Roman is 27% more efficient. Another article claims Garamond was the most efficient font ...
2
votes
2answers
379 views

What is the most sustainable packaging for milk?

When buying milk, there are three forms of available packaging: plastic containers, TetraPak, and glass bottles. None of these forms of packaging are optimal - plastic containers are single-use, ...
3
votes
3answers
122 views

PV system: Which to upgrade first: panels, inverter, batteries?

General question Adding on from the title, what are the restrictions to ensure that the various components of the PV system are compatible with each other? Are there rules around how many batteries, ...
6
votes
5answers
265 views

Is boxed wine more ecofriendly than bottled wine?

In a few weeks I'll be hosting an event and will need to purchase wine for about 30 or 40 people. For myself and my partner, I typically purchase boxed wine as it stays fresh longer (assuming the wine ...
5
votes
3answers
132 views

Is putting plastic in the garbage better than putting it in the recycling bin?

It has been two years since China has cracked down on importing recyclables, and it appears the U.S. has had to stockpile, incinerate, landfill, or divert most of its recyclables stream to other, less-...
7
votes
2answers
228 views

Is cheese as bad as beef for the environment?

Among foods, beef is frequently noted as one of the biggest causes of global warming, particularly because cattle produce methane as part of their digestion. Cheese is less frequently discussed in ...
4
votes
7answers
279 views

Sustainable Alternative to Aluminium Foil?

As someone who uses a ton of aluminium foil (almost daily) for use in my oven as a protective/convenient layer, (and who didn't know that foil was bad for recycling...) what can I use as an ...
13
votes
4answers
3k views

How can I support the recycling, but not the new production of aluminum?

While the initial production of aluminum is a waste-intensive, energy-intensive process that has negative environmental and social impact through deforestation and contamination of waterways, aluminum ...
3
votes
2answers
139 views

What are the ecological effects of buying “imperfect produce”?

I have seen a few sites such as imperfectproduce.com, fullharvest.com, and hungryharvest.com. They sell food that they claim would otherwise go to waste because it would be hard to sell through ...
4
votes
2answers
150 views

How far is too far to drive to a recycling centre?

Where we live the council collects recycling, however the quantity you can recycle each fortnight is sadly limited. When I get big cardboard boxes I keep them in the garage until I have. a pretty ...
3
votes
1answer
75 views

Why western countries do not heavily tax beef imports?

I hear that Brazil slowly but surely burns the Amazonian forests (apparently already payed for by western countries) to make room for cows and supported cultures like soybean. This is obviously bad ...
4
votes
1answer
404 views

How bad are incense sticks for environment?

Belonging to a country where incense sticks are used extensively, I wonder how bad are they, althought it is said they are good for air. But at moment, it seems highly misleading to me. What are the ...
3
votes
2answers
133 views

CO2 track of staying in huts which are supplied by helicopter

How much CO2 do we produce by sleeping on average in a hut (including breakfast and dinner)in high-altitude > 3000 m)? Let's assume that the hut offers 50 beds and that a helicopter has to supply the ...
3
votes
3answers
173 views

Impact of vegetarianism on the meat industries

My main goal is to get rid of mass husbandry and the environmental impact of industrial meat production. My question is: Is it better to abandon meat from my diet completely or to endorse eco-...
5
votes
3answers
165 views

Why don't we use cattle to re-store CO₂ in the soil?

In this old TED conf., Allan Savory, and in this rather newer other here, Joel Salatin are quite saying the same thing as a tentative to mitigate the effect of burning fossil fuels: We should use ...
4
votes
1answer
94 views

When is cleaning recyclables less sustainable than throwing them away?

I live in the middle of the US, our tap water comes from the local river, and our sewer goes back to the local river. Communities up and down the river get their water and return their waste to the ...
3
votes
2answers
69 views

Do we have a way to limit rising sea levels in a warmer global climate?

So, let's be honest the global climate is warmer and is going to be even much warmer no matter what. This causes glaciers to melt and more water to move to the oceans, and rising sea levels. This also ...

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