Unanswered Questions

136 questions with no upvoted or accepted answers
7 votes
1 answer
134 views

How do I choose the most sustainable chocolate?

I've heard that the production and import of chocolate has some consequences including deforestation, excessive use of pesticides and CO2 emissions. There are also concerns about exploitation of ...
6 votes
1 answer
292 views

What's the environmental impact of industrial sources of store-bought bagged soil? Is it a 'net positive' in terms of building soil & storing carbon?

To help grow lots of trees and ecologically friendly gardens, I've bought lots of bags of soil over time. There are better, more local sources of soil/mulch/compost, but nevertheless I go the route of ...
5 votes
0 answers
28 views

Is thermal heating of soil contaminated by coal gasification plant safe in a built-up zone?

Where I stay, theres a site (see intro here) nearby that used to be a coal gasification plant (produces coal gas for lightning etc.). The plant contaminated the soil with PAHs and heavy metals with ...
5 votes
0 answers
32 views

Which part of the process of estimating wind resource has the potential greatest benefit from further research?

Estimations of the potential generation resource of wind power happens at all scales from very coarse global estimates, to detailed estimates at individual sites based on specific locations and ...
5 votes
0 answers
241 views

What are the advantages and disadvantages of using lidars over sodars for wind resource assessment?

The process of wind resource assessment has used a variety of methods over the years; more recently, lidar - radar-style sensing using lasers; and sodar (similar, but using sound) have come to ...
4 votes
0 answers
35 views

How "eco" is the (3hr+) Eco mode on dishwashers

Our domestic dishwasher has an "Eco" mode that takes around 3.5 hours to run. I presume that the time includes lots of resting time to allow the contents to soak. However, I find it very ...
4 votes
0 answers
91 views

Radiative Cooling for Residential

I've seen a lot of references to films which radiate heat from an underlying surface out into space. For example: http://radi-cool.com/ https://arpa-e.energy.gov/technologies/projects/passive-...
4 votes
0 answers
52 views

Can mealworms form part of a healthy diet in the UK?

Mealworms for birds are a cheap form of nutrition. Could they be processed at home in a way to make them healthy? Dried mealworms are sold as bird food for just under £8/Kg in the UK or $3/Kg from ...
4 votes
0 answers
70 views

How much CO2 is currently captured in the EU per year with CCS technologies?

I wonder how much carbon dioxide is captured per annum in the EU at the moment. In this article (p. 5), one can read that the two largest CCS facilities in Europe currently capture around 1,55 Mt/y. ...
4 votes
0 answers
149 views

Are talcum powder tins more sustainable than the ones that come in plastic boxes?

I was shopping and as a trial, I bought a talcum powder in a tin container instead of the usual ones that comes packaged in a plastic box. The material looks like a tin, although one cannot tell from ...
4 votes
0 answers
70 views

Any sustainability difference between anionic/cationic/nonionic detergents?

Are any of these three types of detergents more or less damaging to manufacture and/or use or dispose of than the others? I realise these are rather broad classes, but this is usually the only detail ...
4 votes
0 answers
46 views

Pond for largemouth bass / perch

In NE Ohio (Zone 5 - 6) how large of a pond would I need to raise largemouth bass or perch for food production. What is the minimal depth and diameter required for 100 fish?
4 votes
1 answer
47 views

Large-scale test data on LED, CFL, and incandescent brightness and longevity

A google search for "comparing LED, CFL, and, incandescent brightness" returns hundreds of charts showing what equivalent wattage of LEDs and CFLs are to match an incandescent bulb. This is fine for ...
3 votes
0 answers
33 views

Is reindeer meat sustainable?

Beef is generally considered unsustainable, since cows are ruminants that fill the atmosphere with methane. The greenhouse gas effects are massive per a kilogram of produced beef. However, something ...
3 votes
0 answers
27 views

In which garbage container should i throw the mug from the coffee maker?

I live in Spain. In which container should I throw this - the mug from the coffee maker? It has plastic, glass and metal. The green container is for glass. The yellow container is for plastic and ...

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