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4
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1 answer
Ecological Footprint: United States National Yield 2012
Does ANYONE have (or can point me to a publication that has) the national yields for the Ecological Footprint as calculated by the Global Footprint Network for the United States for the year 2012?
I need the Yield Factors (which I can calculate…
Alex
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How is NOx mg/km from diesel cars and trucks related to µg/m3 in the air?
There are two different limits for NOx / NO2 in Europe:
1) 80 milligrams NOx per km that a diesel car or truck drives:
Euro 6 .
(In some cities you can't drive a diesel that emits more than that.)
2) 40 µg / m3 NO2 in the air (NO2, not NOx; averaged…
denis
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4
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Carbon footprint of CNG vs. Diesel as a vehicle fuel
What is the benefit, in terms of carbon footprint, of replacing a diesel fueled vehicle with an identical one with a CNG engine?
I'm not convinced I can simply take the carbon intensities of these two fuels (kg CO2/kWh) as I'm not entirely sure the…
mart
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4
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Apply solar energy solutions at our apartment?
I know this will probably get closed, but it seems that I can't find anything that will guide me in the right direction.
We live in a South American country, so we have tons on sun. We also have a terrace, so we have tons of wind. Lately, I've been…
rbhat
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4
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Are there any take-out restaurants where you can bring your own dishes?
Many cities in the US have banned plastic bags, and more are added to the list regularly. In addition, some cities are even beginning to ban plastic water bottles.
These bans (and in some cases, fees) encourage people to bring their own bags or…
LShaver
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4
votes
2 answers
Most sustainable type of cream container?
The grocery co-op where I shop offers local, organic cream from three different farms, which use three different types of recyclable containers (all roughly the same volume):
Mini version of clear plastic milk jug:
Wax-coated cardboard carton (no…
LShaver
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4
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1 answer
What commercially printed paper is safe to compost?
I like adding carbon to the scraps I compost by mixing in some shredded newspaper and Yellow/White Pages books (bot not glossy magazines).
What should I check for to make sure I am not adding chemicals that might have a negative impact on the soil…
stragu
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4
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2 answers
In what ways do GMOs harm or benefit the environment?
In principle, does the manner in which genetic engineering is currently used in agriculture pose a threat to our environment, or provide benefits?
I understand there are concerns about reduction of genetic diversity, but are there more specific…
LShaver
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4
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1 answer
Are broiler chickens raised in "chicken tractors" less likely to get hock burn?
There is a discussion on the James Oliver site asking if a free-range bird can have hock burns. There are statements that a free-range chicken could develop hock burn due to exposure to mud.
A chicken tractor (sometimes called an ark) is a movable…
user290
4
votes
2 answers
Is it worthwhile to collect leaves that fall in autumn from trees for biogas production?
I observe every year in autumn that fallen leaves are piled and left to rot. Assuming there are biogas facilities (say within 10 miles) is there some reason to not ferment the leaves? Is the energy density too low? In cities, the leaves are…
Rainer Glüge
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4
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1 answer
How can I vent smoke from a non-rangehood stove without losing too much hot air?
I want to vent smoke, such as roasting coffee smoke and cooking grease out of my kitchen. I do not have a hood, nor is there room to install one due to cabinet and window placements just above the stove.
I have a window just above the stove, so…
Enjabain
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4
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1 answer
What does the P90 of a wind resource mean?
I've heard that investors use the P90 of a wind resource when considering an investment. What kind of measure is it, what does it actually mean, and how is it calculated?
410 gone
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4
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3 answers
How I use/clean this old SIGG bottle that makes water taste bad?
In my furnished apartment I found a 0.6 litres SIGG bottle from unknown year and previous tenant.
It makes the water taste bad (not clearly a metallic taste, somewhat different or more in addition to that) and also I found out that old SIGG bottles…
FarO
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4
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3 answers
Why is there so much scarcity of water?
Today I heard on the radio that only 1 litre of water will be available per person by year 2090.
If there is plenty of seawater present on our earth and there are processes like desalination and distillation for making seawater usable/drinkable ,…
Jasmeet singh
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4
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3 answers
Does the price of polysilicon (for solar PV panels) depend on oil prices?
The assertion that the answer to this question is "yes" was made in an answer to another question here: Which solar power technology has the highest energy return on investment (EROI aka EROEI)?.
The user (@DJSims/@NeilTyson/@Mustang) posted these…
LShaver
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