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votes
2answers
71 views

Which packaging has less negative impact to the environment, foil paper or plastic + cardboard?

so I am starting a small business that sells packaged food and coffee beans. Sustainability is an important issue for me, so I'm trying for my packaging to negatively impact the environment as small ...
3
votes
2answers
80 views

Should I use a plastic trash bag for my recycling bin at home or not?

I want to have a recycling bin at home in addition to a trash bin. Should I line my recycling bin with a trash bag and bag it up when it's full to toss in the dumpster's recycling bin? Or should I ...
4
votes
3answers
119 views
3
votes
4answers
191 views

Will a warmer climate reduce energy demand and increase solar PV production?

Nowadays, everyone talks about it: climate change, and more importantly, how to stop it from happening. Although there's a lot of debate around the topic, the consensus is that by inventing a way of ...
3
votes
3answers
119 views

Carbon emissions from Ethanol car fuel

I understand that much of the low CO2 emissions for ethanol as vehicle fuel are related to its entire lifecycle (CO2 is sequestrated when the crop is grown and released when it combusts so it is ...
2
votes
3answers
109 views

How to reduce indoor humidity in the summer time?

I own a home in southern Wisconsin, USA, where we have a humid continental climate (emphasis on humid!). There is no central air conditioning. This summer we are experimenting with cooling strategies ...
4
votes
3answers
72 views

How to reduce energy usage of a window air conditioner?

In the summer, we use a window air conditioner in our bedroom to be able to sleep comfortably at night. It takes a while to cool, and I know it uses quite a bit of energy. Here are a few steps we take ...
2
votes
1answer
77 views

Non-plastic straws in Germany?

I want to find non-plastic straws. Are there are any in Germany, that you can physically buy? I live in Bavaria. I have a big Edeka, Rewe, Lidl and Rossmann nearby, but I am ready to travel "great" ...
4
votes
2answers
84 views

What is the most sustainable option for writing in the classroom?

I teach in a kindergarten classroom. I would like to know what is the most sustainable out of: paper (starting new, and then as the year goes on, reclaimed/reused as possible paper inside of either ...
3
votes
0answers
36 views

Can metal drink cans be melted at home? [duplicate]

Can metal drink cans be melted at home and reused, remoulded into something?
2
votes
3answers
91 views

Excavating holes for cooling during summer nights

This idea is motivated by the readings of this Hungarian weather station: It sits within a ponor/doline which is basically a hole in the ground that allows the collection of the dense cold air. It ...
1
vote
2answers
251 views

Do electricity generators that run on methanol exist?

Methanol is probably the easiest burnable fuel to produce that is also sustainable. I'd like to produce electricity from methanol, using a device I'd call a 'Methanol Generator' - but I am struggling ...
0
votes
2answers
42 views

Reducing/Offsetting Impact of New-Build Home [closed]

So, here's a breakdown of the question. Situation: In the next month or two I will be moving house to a new-build detached house in the UK, which is on an estate of around 100 similar such properties....
1
vote
1answer
846 views

How could I use egg yolk from boiled eggs?

Both my wife and I avoid eating yolk (as much as possible). I know I can find some uses for raw yolk but I am not sure if the yolk from boiled eggs can be put to good use, other than forms that ...
5
votes
2answers
205 views

How many square kilometres of offshore wind farms would be required to replace the closing of a 4GW nuclear power station

A large nuclear power plant has a capacity of 4GW and a capacity factor of about 90%. How much installed capacity of wind turbines with a capacity factor of 40% would be required to match that output?...
-1
votes
1answer
76 views

Corn after humans

None of my farmer friends who grow corn for a living seem to have an answer for this. After an event that wipes out all/most human life, how long would fields planted with food corn be expected to ...
3
votes
5answers
133 views

Is there standard methodology for assessing how environmentally friendly a particular lifestyle is?

The headline says it all, I'm looking for a standard way of assessing a lifestyle against environmental criteria. I'm thinking of some sort of lifestyle questionnaire that will produce a score from 0 ...
-2
votes
4answers
292 views

Is wind power practically dead? [closed]

U.S. annual installations have been declining since 2012. Essentially everywhere else, besides China's low quality wind, there's only a handful of new farms being built. Is wind pretty much dead?
2
votes
2answers
113 views

Why do some people say that biofuels are renewable energy source if producing biofuels requires nitrogen fertilizers?

Why do some people say that biofuels are renewable energy source if producing biofuels requires nitrogen fertilizers that are produced from natural gas (and energy output of biofuels is less than that ...
3
votes
2answers
374 views

If water gets on solar panel connector from cleaning or rain will it cause problems?

I have a solar array with 8 panels. There is a slight gap between each panel. At 2 locations string MC4 connectors are placed between the gaps. My question is if water gets on this connector (and not ...
4
votes
1answer
225 views

What is the energy payback time of portable solar panels, in hours?

I'm interested in knowing the typical energy pay-back time of a solar photovoltaic panel, in terms of hours operating under an ideal scenario. Energy pay-back time (EPBT) is usually quoted in terms ...
1
vote
2answers
525 views

What is the typical embodied energy of a solar photovoltaic panel?

What is the typical embodied energy of a solar photovoltaic panel, in terms of nominal power output or panel area? The ideal answer would be in kWh/WP, but kWh/m2 would also be acceptable. I ...
2
votes
1answer
109 views

What is the minimum indoor CO2 concentration that is achievable using houseplants?

CO2 concentration is linked to health risks and even our ability to think well. Meanwhile, houseplants decrease CO2 concentration when they receive enough sunlight. However, both houseplant studies ...
3
votes
1answer
64 views

With current technology, how much CO2 is emitted when making renewable power plants?

In order to make a solar panel or a wind turbine, a few basic inputs are required: labor energy water raw materials Given the current abundance of renewable resources, I assume that the first three ...
2
votes
1answer
114 views

Recycling : paper, plastic or aluminum, which one to choose, if only one?

Supposing I can focus only on one type of material to recycle, choosing from paper (card board etc), aluminum (can etc) or plastic (water bottle etc), then which choice of material will help the ...
2
votes
0answers
52 views

Palm oil usage statistics

Can someone point me to a resource that would detail what is palm oil being used for, preferably with some % indicators? A staunch meat eater has been boldly proclaiming that being vegetarian or ...
2
votes
0answers
35 views

How to make extracts and fragrances from fragrant plants like Sage

I'm looking to try using more natural products/solutions in our day to day life and some things that I am considering are fragrances, soaps and essences (food). I have read that Sage plants are edible ...
2
votes
1answer
37 views

What information is lost when converting other air pollution into CO2e?

I'm struggling to explain the most important aspects of air pollution in a concise way. I understand CO2 is the biggest issue and long-term driver of global warming, but beyond that I'm lost. News ...
2
votes
0answers
41 views

Objective Index of environmental impact of consumer goods and food [closed]

I often hear arguments from people around me, about the environmental impact of certain consumer behaviours like: eating meat using plastic bags travelling via car instead of plane and many others. ...
4
votes
1answer
73 views

Plastic incineration vs discarding considerations

Firstly, let me say, I am not pro-either. I just hear about people trying to save the environment (and putting an end to bad municipal 'dump site' behaviour) by rather burning their trash. This is ...
3
votes
2answers
40 views

Should the CO2 footprint of employment factor into purchasing decisions of consumer goods?

If my employer pays me £80 per day, and I can estimate the CO2 footprint of doing my job, compared not working, is around 15Kg CO2e. So my earnings have a footprint equivalent to 180g CO2e per £. (...
1
vote
3answers
59 views

Any succesful initiatives for packaging material reuse?

I find that we are having more and more things delivered as opposed to buying in stores. This winter a few cardboard boxes with 10kg of oranges, several books, and just this week a fridge. I was ...
0
votes
0answers
59 views

How to sell shredded plastic in the UK?

I would like to purchase a shredding machine in order to shred plastic myself, I was wondering if there were any standards I'd need to watch out for and where I could find businesses willing to ...
1
vote
0answers
128 views

Uses for Sycamore tree bark?

I live near a number of parks which have very large Sycamore trees. In winter these trees naturally shed their bark. The bark tends to pile up at the bottom of the tree until, I assume, the park ...
2
votes
1answer
66 views

Are there examples of (more) sustainable scientific conferences?

Scientists frequently speak out about the dangers of climate change, and I'm sure there are many scientists who make concious choices for their own lives with a view towards sustainability. But are ...
7
votes
3answers
740 views

Is it more environmentally friendly to use laptops or desktop PCs?

I've often wondered whether it's more environmentally friendly to use a desktop or a laptop. To compare purely the electricity usage, I can of course calculate how long I leave my computer turned on, ...
3
votes
1answer
62 views

Will I damage batteries by charging them directly with solar outputs?

I recently picked up a few cheap, mini photovoltaics. I'm planning to wire three in parallel for a 2V, 900mA max output. I'm not well versed in battery mechanisms, and I was wondering if I would ...
5
votes
1answer
80 views

How to encourage people to sort waste properly

We have put a fair amount of effort into reducing the impact of our staff canteen in our office. One part of this is introducing separate food waste and recyclables bins. However many canteen users ...
3
votes
1answer
64 views

To what extent do CO2 emissions from motor vehicles vary?

Do the CO2 emissions from petrol / gas vehicles vary depending on driving style? Are emissions a function of the engine type or the fuel efficiency? If a motor car is rated at 105 g/km, but it is ...
3
votes
2answers
107 views

Does a short-term shut down of a coal plant cause more CO2 emissions than keeping it running?

According to this article from Reuters, it takes up to eight hours for a coal plant to reach maximum generation. This means that four up to eight hours after it starts up, the plant is burning coal at ...
0
votes
1answer
40 views

I have got some lights for hydroponic growing, they run from the UK mains but have small clover shaped connectors - what are these called?

I just got a load of LED grow light tubes - they have mains connectors that use clover shaped plugs -- very much like a lot of laptop chargers use, but just a bit smaller. There is no label on the ...
3
votes
1answer
92 views

With two 50W panels best to wire in series or parallel?

Charge controller (Renogy Wanderer 10A PWM) can handle the combined voltage when wired in series. From the spec sheet, it has a max PV input voltage of 50VDC. Panels connect to a charge controller ...
3
votes
1answer
61 views

How to mark pavement and grass without harming environment

I'm looking for some kind of paint to make markings on the pavement and on a grassy area, so that the markings are well visible for a day or so. Spray paint would do the trick but is not very ...
2
votes
2answers
83 views

Electric cars and grid power capacity

The UK has a target to be carbon-neutral by 2050: As we can see in the image large cuts across all type of CO2 emissions are required. This article by the BBC suggests a number of ways in which ...
4
votes
1answer
1k views

Is there a difference between DC \ PV cable and AC cable?

I have now seen a few DIY tutorial videos (not in english) which suggest that one should use DC cable for connecting Solar Panels to the Inverter. They claim that AC cable causes a greater voltage ...
3
votes
1answer
60 views

Costs of transportation

I assume that it makes sense to ask for the energy costs of transportation of different goods per weight and volumetric mass density, depending on the means of transportation (truck, train, ship, etc.)...
4
votes
1answer
104 views

In the UK, is it ok to recycle plastic food packaging along with carrier bags?

I live in the UK and do most of my groceries shopping online. At the same time I collect my order I can also hand back to the driver all carrier bags from my previous order (which is great). Some ...
4
votes
2answers
90 views

Is it possible to make homemade bone meal?

Like many people, we eat some meat, and the resulting bones need to be dealt with after the hens have finished cleaning them or they have been used for stock. I have been burying some bones but am ...
3
votes
3answers
2k views

Method of transport with decent speed/low cost without a driving license?

I'm looking for something a little bit better than your average bike in terms of transportation potential, but cannot be a license-required vehicle as I cannot get a driver's license. I also don't ...
5
votes
1answer
1k views

Seaweed snacks without lots of packaging

My kids like seaweed snacks but there’s so much packaging. Alternatively I can buy crackers or raisins in large packages, reducing both the cost and packaging (plus if the package is cardboard it’s ...

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