move the wiki content into the main site

(keeping the current filenames and Obsidian pseudo-compatibility)

src/Eco-accounting.md

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+Eco accounting means taking account of all impacts on surrounding ecologies - particularly environment and society.
+Let's make this a no-brainer everywhere - please help.
+
+*This page is currently hosted at https://wiki.plaintextaccounting.org/Eco-accounting (on github), 
+uses Plain Text Accounting in examples, and is a small view of the topic from the PTA perspective.
+Of course the topic is large, not PTA-specific, and deserves its own site, but since I found no 
+https://ecoaccounting.org I have set up that domain to redirect here. Domainers, the domain is not for sale.
+Respected environmental organisations with a better use for this domain, feel free to chat.*
+
+## Reference
+A small random list of background resources:
+
+- How To Avoid A Climate Disaster, Bill Gates - useful definitions of carbon emissions
+- https://en.wikipedia.org/wiki/Greenhouse_gas_emissions
+- https://en.wikipedia.org/wiki/Carbon_footprint
+- https://en.wikipedia.org/wiki/Carbon_accounting
+- https://en.wikipedia.org/wiki/Environmental_accounting
+- https://en.wikipedia.org/wiki/Environmental_economics
+- https://en.wikipedia.org/wiki/Ecological_economics
+
+## Environmental Cost-Benefit Report
+
+In current times, most human endeavours should maintain and publish an environmental cost/benefit report. 
+The naming might vary in english; "Environment Impact Report" is familiar, but can sound more dull and scary.
+"Climate Impact Report" is more punchy, but also less general.
+
+"Cost" means some environmental impact such as resources used (energy, water, land..)
+or undesirable waste generated (carbon dioxide, toxins, heat, noise, harm..).
+
+No matter how approximate, any such report is better than nothing; 
+it builds awareness and know-how, it allows comparison and trend analysis, and it can be continually improved.
+
+## Carbon accounting
+
+Rough estimates are better than nothing. Other estimation procedures welcome!
+
+### Estimate total carbon footprint
+Carbon footprint correlates roughly with economic activity.
+Estimate yours by your total regular (carbon-emitting) expenses,
+minus any clearly carbon-offsetting expenses (such as carbon offsets purchased).
+Optionally convert this by some rate, which can be estimated by comparing with online carbon footprint calculators periodically. The rate will probably be relatively stable over time.
+
+```
+; estimate that one dollar spent generates 2 "C", approximate carbon emission unit
+P 2022-01-01 $ 2 C
+```
+
+then
+
+`hledger bal expenses not:tag:carbon-offset -X C`
+minus
+`hledger bal expenses tag:carbon-offset -X C`
+
+### Estimate carbon footprint from air travel
+When recording flight purchases, also record the flight distance as a tag.
+Optionally modify that number based on the flight's efficiency rating.
+(These can be seen in flight planners such as Google's.)
+
+We need a way to use that tag as the amount (or an amount modifier. `--amount 'amount * tag(carbon)'` ?)
+
+## Waste accounting
+
+- [Waste and recycling tracking](https://www.flypig.co.uk/waste) 
+  - [A Year Being Human: Inputs and Outputs](https://www.flypig.co.uk/list?&list_id=830&list=blog), 2023