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Combined display of all available logs of the change wiki. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

09:48, 25 August 2022 Elie talk contribs created page Code:fao2usda.csv (Created page with "This is part 2 of the fao_usda.csv cross-reference table. This one deals with animal products instead of plant products. ==Code== <syntaxhighlight lang="csv"> "Item Code (FAO)","NDB_No","Multiplier" 1062,01123,1 1091,01138,1 1182,19296,1 1166,80200,1 1108,17152,1 1089,05144,1 947,17160,1 1127,17172,1 867,13047,1 1058,05001,1 1069,05139,1 1163,17330,1 1017,17168,1 1073,05146,1 1097,17170,1 1111,17144,1 1158,17158,1 1151,17...")
09:36, 25 August 2022 Elie talk contribs created page Code:fao usda.csv (Created page with "fao_usda.csv is a cross-reference table, to connect data from two sources: # FAO Primary Crop Production # USDA Nutrition Data, SR Legacy Purpose: to help analyze crop production in terms of calories, protein, etc. FAO data specifies crop production in tonnes, but for some crops, this includes some inedible parts. For example a ton of bananas includes the peels; a ton of apples includes the co...")
08:57, 25 August 2022 Elie talk contribs created page Analysis (Created page with "Unlike Wikipedia, ''this'' wiki is full of ''original research''. We aim to make analysis as open, transparent, and repeatable as possible. You can help analyze data - here's our standard way to set up a folder on your computer: * Any files from the <code>Code:</code> namespace should be saved in the root of the folder. * Any files from the <code>File:</code> namespace should be saved in a subfolder called <code>data/</code>. ** Files that are Term:primary data from...")
08:25, 25 August 2022 Elie talk contribs created page Code:food2.sql (Created page with "Like Code:food1.sql, this analyzes food production data from FAO, and nutrition data from USDA. But while ''food1'' is focused on plants (crops Term:primary), ''food2'' is focused on animal products (livestock primary). <syntaxhighlight lang="sql"> -- Analysis of the production of animal products -- Load data from various sources .mode csv -- cross-reference table 2: livestock products (FAO data) with foods (USDA nutrition data): .import fao2usda.csv...")
17:42, 24 August 2022 Elie talk contribs created page Land (Created page with "Land usage is a major environmental impact due to habitat loss. Agriculture uses vastly more land than all other human activity combined. Earth Surface * Oceans (% of Earth Surface) * Land (% of Earth Surface) ** Pasture: km^2 (% of Land) ** Cropland: km^2 (% of Land) ** Built-up land: km^2 (% of Land) *** "Built-up" includes all housing (cities, suburbs, towns, etc), buildings, roads, infrastructure and more. <tabs> <tab name="Pasture">File:land-pastu...")
17:17, 24 August 2022 Elie talk contribs created page Rewilding (Created page with "==Q&A== ===Unanswered=== How much carbon does every km^2 of newly-grown forest sequester per year? How much carbon does every km^2 of newly-grown grasslands sequester per year?")
17:17, 24 August 2022 Elie talk contribs created page Habitat loss (Created page with "Habitat loss refers to the destruction of any natural wild ecosystems, such as forest. This causes extinctions and carbon emissions. Most habitat loss is caused by agriculture. {{qn}} This page is incomplete. ===Unanswered questions=== How much CO2 is released for every km^2 of deforestation? How much CO2 is released for every km^2 of destroyed grasslands?")
17:03, 24 August 2022 Elie talk contribs deleted page File:Food-funnel.png (Deleted old revision 20220824220214!Food-funnel.png: image had alpha channel glitch)
17:02, 24 August 2022 Elie talk contribs uploaded a new version of File:Food-funnel.png
16:56, 24 August 2022 Elie talk contribs created page File:Food-funnel.png
16:56, 24 August 2022 Elie talk contribs uploaded File:Food-funnel.png
16:55, 24 August 2022 Elie talk contribs moved page File:Food-funnel.png to File:Food-funnel-old.png without leaving a redirect
20:44, 15 August 2022 Elie talk contribs created page Maximum sustainable animal consumption (Created page with "Vegans rightly point out that meat-containing diets require more land (and thus more deforestation) since feeding animals is a net loss of protein and calories. But... Pro-meat folks rightly point out that some land is only suited for grazing animals. This raises a more important question: :If farm animals only ever ate... :* grasses and other plants from pasture & range, and :* the parts of food crops that humans ''can't''...")
14:15, 14 August 2022 Elie talk contribs created page Term:kalorie (Redirected page to Term:kalories) Tag: New redirect
14:14, 14 August 2022 Elie talk contribs created page Term:kalories (Created page with "===Why spell kalories with a k?=== A kalorie is a food calorie. The 'k' is to prevent confusion with an older historical unit "calorie", which is 1000 times smaller. When someone says "An apple has 95 calories", technically the "proper" wording would be "An apple has 95 kilocalories". But that could easily confuse people more, as "95 kilocalories" sounds like enough food for a hundred meals! So a better solution is to say "An apple has 95 kalories" - the "kilo" is impli...")
14:11, 14 August 2022 Elie talk contribs created page Term:primary (Created page with "The word ''primary'' is used in very specific ways on this wiki. ===Food=== "Primary food production" is amount of food that is harvested from farms. Not all of this gets eaten. ===Energy=== "Primary energy production" - also known as "total energy supply" (TES) is the amount of energy produced ''before'' any transformations. This is in contrast with "total final consumption" (TFC) which is ''after'' transformations. For example, when natural...")
12:07, 14 August 2022 Elie talk contribs uploaded a new version of File:Food-crop-production1-if-crop-choices.png (Made the legend bigger)
12:06, 14 August 2022 Elie talk contribs uploaded a new version of File:Food-crop-production1.png (Made the legend bigger)
18:54, 13 August 2022 Elie talk contribs created page Crop choices/chart (Created page with "===Average crop yields for each crop, by region=== The best-yielding crops are on the '''left''' (after ''status-quo'') and the worst are on the right. Ranking is based on calories & protein (see why). More specifically, 2000 Term:kalories is given the same ''value'' as 60 grams of protein. This table is generated by Code:food1.sql which uses data from [https://fao.org FAO] (on food crop production) and [https://usda.gov USDA] (...")
11:24, 13 August 2022 Elie talk contribs created page File:Food-crop-production1-if-crop-choices.png (Food crop production - what it would be if mainly high-yielding crops were chosen. (Isochromic world map) (Projection: equirectangular/geographic))
11:24, 13 August 2022 Elie talk contribs uploaded File:Food-crop-production1-if-crop-choices.png (Food crop production - what it would be if mainly high-yielding crops were chosen. (Isochromic world map) (Projection: equirectangular/geographic))
11:18, 13 August 2022 Elie talk contribs created page File:Food-crop-production1.png (Production of food crops, superimposed on population. Isochromic world map (projection: equirectangular/geographic))
11:18, 13 August 2022 Elie talk contribs uploaded File:Food-crop-production1.png (Production of food crops, superimposed on population. Isochromic world map (projection: equirectangular/geographic))
00:51, 9 August 2022 Elie talk contribs created page Responses (Created page with "==Energy-related== ===Response to=== Du, HL., Chatti, M., Hodgetts, R.Y. et al. Electroreduction of nitrogen at almost 100% current-to-ammonia efficiency. Nature (2022). https://doi.org/10.1038/s41586-022-05108-y https://www.nature.com/articles/s41586-022-05108-y This could be a breakthrough for fertilizer. Electricity could convert nitrogen gas (N2) to ammonia (NH3) at nearly 100% efficiency - unlike any previous attempts. Lithium is...")
00:02, 9 August 2022 Elie talk contribs created page Ammonia (Created page with "Ammonia (NH3) is a form of nitrogen. The vast majority of ammonia is used for fertilizer. Ammonia production requires energy. Currently this is mainly done with fossil fuels. But suppose we find another (greener) scaleable way to produce it... Then could it also be used as the "fuel of the future"? Because apparently it's easier to work with (storage, transport, etc) than hydrogen gas. Questions unanswered: What about the...")
13:13, 7 August 2022 Elie talk contribs moved page File:Primary-Country-and-continent-codes-list-csv csv.csv to File:PRIMARY-Country-and-continent-codes-list-csv csv.csv without leaving a redirect
13:12, 7 August 2022 Elie talk contribs moved page File:Primary-Blue Marble 2002.png to File:PRIMARY-Blue Marble 2002.png without leaving a redirect
13:02, 7 August 2022 Elie talk contribs created page File:Primary-Country-and-continent-codes-list-csv csv.csv (Table of countries and their Country Codes (ISO3, M49, etc) and the continents they are on. Source: [https://datahub.io/JohnSnowLabs/country-and-continent-codes-list])
13:02, 7 August 2022 Elie talk contribs uploaded File:Primary-Country-and-continent-codes-list-csv csv.csv (Table of countries and their Country Codes (ISO3, M49, etc) and the continents they are on. Source: [https://datahub.io/JohnSnowLabs/country-and-continent-codes-list])
03:11, 7 August 2022 Elie talk contribs created page Code:borders-black-on-white.c (Created page with "<syntaxhighlight lang="c"> #define WIDTH 8640 #define HEIGHT 4320 #define IN_FILE "data/countries.data-int16-8640x4320" #define OUT_FILE "data/borders-black-on-white.png" #include <stdio.h> #define STB_IMAGE_WRITE_IMPLEMENTATION #include "stb_image_write.h" int main() { short *in = malloc(WIDTH*HEIGHT*sizeof(short)); unsigned char *out = malloc(WIDTH*HEIGHT*sizeof(unsigned char)); if (!in || !out) { printf("Not enough memory\n"); free(in); free(out);...")
03:06, 7 August 2022 Elie talk contribs created page File:Borders-black-on-white.png (World map: Outlines of countries, black on white Projection: equirectangular (geographic) This image was generated by Code:borders-black-on-white.c which uses File:countries.data-int16-8640x4320 (data from NASA) as input.)
03:06, 7 August 2022 Elie talk contribs uploaded File:Borders-black-on-white.png (World map: Outlines of countries, black on white Projection: equirectangular (geographic) This image was generated by Code:borders-black-on-white.c which uses File:countries.data-int16-8640x4320 (data from NASA) as input.)
02:52, 7 August 2022 Elie talk contribs created page File:Population-earth1.png (An Term:isochromic map of the world population, superimposed on a pastel-color background that shows land, water, and borders. Everything in black is population. Note: Some border lines may be completely obscured by populations (especially India's borders with Bangladesh, Pakistan, and Bhutan). Still better than the opposite (letting the border lines obscure the populations).)
02:52, 7 August 2022 Elie talk contribs uploaded File:Population-earth1.png (An Term:isochromic map of the world population, superimposed on a pastel-color background that shows land, water, and borders. Everything in black is population. Note: Some border lines may be completely obscured by populations (especially India's borders with Bangladesh, Pakistan, and Bhutan). Still better than the opposite (letting the border lines obscure the populations).)
02:35, 7 August 2022 Elie talk contribs created page File:Primary-Blue Marble 2002.png (NASA's original Blue Marble Map of the Earth from satellite imagery Source: https://visibleearth.nasa.gov/collection/1484/blue-marble)
02:35, 7 August 2022 Elie talk contribs uploaded File:Primary-Blue Marble 2002.png (NASA's original Blue Marble Map of the Earth from satellite imagery Source: https://visibleearth.nasa.gov/collection/1484/blue-marble)
02:28, 7 August 2022 Elie talk contribs uploaded File:Blue-marble-posterized.png
02:26, 7 August 2022 Elie talk contribs created page File:Blue-marble-posterized.png (Created page with "== Summary == Simplified version of NASA's Blue Marble. Yellow areas are generally deserts or harsh mountainous regions. Suggested usage: for superimposing other data in black and/or white. How it was made * Opened the File:primary/Blue_Marble_2002.jpg in mtPaint (image editor) * Applied gamma=150% to blue and green channels (but not red channel) * Applied maximum color saturation, repeatedly * Posterized the image, on the most extreme setting * Replaced red spots...")
01:59, 7 August 2022 Elie talk contribs created page File:Solar-land-requirements.png (World map: If all energy came from solar panels, how much land would we need? The land is shown in white. We would need approximately 0.8% of Earth's surface. Just for comparison, crop land is about 2.9% of Earth's surface, and pasture land is about 5.4% of Earth's surface. ==Methodology== Land required for solar panels, if * all energy came from solar photovoltaics, and * everyone on Earth lived a "first-world" lifestyle. Map projection: equirectangular Not counted in...)
01:59, 7 August 2022 Elie talk contribs uploaded File:Solar-land-requirements.png (World map: If all energy came from solar panels, how much land would we need? The land is shown in white. We would need approximately 0.8% of Earth's surface. Just for comparison, crop land is about 2.9% of Earth's surface, and pasture land is about 5.4% of Earth's surface. ==Methodology== Land required for solar panels, if * all energy came from solar photovoltaics, and * everyone on Earth lived a "first-world" lifestyle. Map projection: equirectangular Not counted in...)
01:57, 7 August 2022 Elie talk contribs created page MediaWiki:Licenses (Created page with "- Creative Commons GNU General Public License")
11:15, 5 August 2022 Elie talk contribs created page Code:isochromic.c (Created page with "<syntaxhighlight lang="c"> // Elie's isochromic image generator v0.5 // Copyright 2022, Elie Goldman Smith // License: GNU GPL V3 // To compile this code: // gcc isochromic.c -lm -lfftw3 -lreadline -lcurses -O3 -o isochromic // # takes awhile to compile, because of optimization and stb_image #include <ctype.h> #include <fftw3.h> #include <math.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <readline/readline.h> #include <...")
11:11, 5 August 2022 Elie talk contribs created page Code:food1.sql (Created page with "<syntaxhighlight lang="sql"> -- This is used in the methodology of various olam.wiki pages -- Copyright Elie Goldman Smith, 2022 (Creative Commons license) -- Run this in SQLite3 ---------------------- -- Load data from various sources .mode csv -- cross-reference: crops (FAO data) with foods (USDA nutrition data): .import fao_usda.csv fao_usda -- nutrition (USDA): .import data/sr28-collated.csv...")
16:38, 23 June 2022 Elie talk contribs created page Laundry (Created page with "People like to have clean clothes. But how many resources does it take to uphold the "western" lifestyle of (for example) washing a shirt after wearing it no more than twice? ==Research needed== Things to consider * Soap and water involved * Energy used by the washer * Energy used in manufacturing the washer, divided by the number of washes expected of the lifespan Approaches * Calculate things per wash, or per clothing item washed * Scale it up and see if it matches ot...")
16:35, 23 June 2022 Elie talk contribs created page Cars (Created page with "==Research needed== Vehicles to analyze * Electric car(s) * Gasoline-powered car(s) For each vehicle * Life cycle assessment: stages ** production (materials, manufacturing) ** usage (driving, repairs, maintenance) ** disposal (scrapping, recycling, and/or putting in landfill) * For each stage, list resources used: ** Energy ** Materials (start by quantifying each material separately, if possible) ** If data is available: *** Carbon emissions *** Other pollution *** Labo...")
16:25, 23 June 2022 Elie talk contribs created page Appliances (Created page with "It's a common ''green initiative'' to replace '''old''' appliances with '''new''' ones that use less energy. But in what cases is this actually beneficial to the environment - and in what cases is it '''worse'''? We have to compare the environmental footprint of making a new appliance vs the energy saved. Reasons we shouldn't assume (by default) that replacement is the better choice: * Globally, Energy#Energy_demand|manufacturing uses far more energy than house...")
22:52, 22 June 2022 Elie talk contribs created page Wood (Created page with "/wood Wood is both a material and a fuel. It comes from cutting down trees. ==Research needed== Global production of wood * By source type ** Tree farms *** Yields: how much wood per day per acre? ** Old growth *** How much wood per acre of deforestation? * By product grade ** Lumber ** Firewood ** Pulp/paper ** Sawdust ** Other? What would happen if global production increased? More old-growth forests would be converted to tree farms, I wo...")
18:47, 22 June 2022 Elie talk contribs created page Talk:Materials (Created page with "==How to make this work?== What should I (the webmaster) put in place to enable people to easily contribute to the research? I'm trying to set it up in a way that... * anyone can contribute information on any material (glass, steel, etc) * the information fits into the framework I wrote (environmental impacts) Should there be some sort of a workspace? Perhaps a wiki table or two? I'm looking for ideas. ~~~~")
18:26, 22 June 2022 Elie talk contribs created page Materials (Created page with "The world depends on materials such as metal, glass, plastic, wood, and so many more. All of these have an environmental impact, and involve some human labor. How do we weigh the benefits of any ''green solution'' against the materials it uses? ==Research needed== For each material, consider * The energy it takes to produce it * The pollution it takes to produce it {{x|If there are less polluting ways, are there tradeoffs such as needing mo...")
18:07, 22 June 2022 Elie talk contribs created page Insulation (Created page with "It takes energy to heat & cool buildings. The worse the insulation, the more energy it takes. There are plenty of ways to improve the insulation. But that ''also'' takes energy - as well as labor and materials. We need to compare the environmental impact of ''doing the work'' vs ''doing nothing''. In which cases is it better to renovate, and in which cases is it better to just let it be? ==Research needed== Compare various retrofit scenarios, such as * Replacing o...")