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Re: Do we really want to dive down another Gravity Well?

Tbf, our gravity well is one of the hardest to escape from. Most rocky/icy (spherical) worlds could be escaped from in a Terran suborbital rocket. The tradeoff is: harder to leave, BUT ready access to large amounts of material, including dirt for radiation shielding and water ice and in the case of ...
by Cererean
Fri Jul 14, 2023 4:07 pm
 
Forum: How to build a civilization from scratch on another world?
Topic: Do we really want to dive down another Gravity Well?
Replies: 3
Views: 6283

Primitive Technology book

Amazon link

The book just came out. It looks like it will be an essential part of any apocalypse library. One of those solar powered e-readers would do.
by Cererean
Fri Nov 01, 2019 10:03 pm
 
Forum: How best to preserve vital knowledge?
Topic: Primitive Technology book
Replies: 0
Views: 12674

Cody's Lab

by Cererean
Tue Jun 11, 2019 3:23 pm
 
Forum: How best to preserve vital knowledge?
Topic: Cody's Lab
Replies: 0
Views: 12504

Simple vs Complex, Common vs Rare

Some technologies are simple and use common materials - the digging stick being a prime example, since it can be made out of a wooden stick (common material) by a single person with basic tools (simple, doesn't need a complex society or lots of complex work done). At the other end, we have modern el...
by Cererean
Fri May 31, 2019 9:08 am
 
Forum: How best to preserve vital knowledge?
Topic: Simple vs Complex, Common vs Rare
Replies: 2
Views: 16209

Re: Book:"Feeding everyone no matter what"

Lo, we already know how to make sawdust into cattle feed. The downside, of course, is that cows aren't rapid breeders. I think we'd have to pre-digest cellulose and use it as fish feed, or maybe rabbit and chicken feed. Broiler chickens reach slaughter size within 6 weeks, but they take 16 weeks to...
by Cererean
Mon Mar 04, 2019 1:34 pm
 
Forum: 4. Food and Clothing
Topic: Book:"Feeding everyone no matter what"
Replies: 2
Views: 14177

Re: Book:"Feeding everyone no matter what"

I have that book. Cows can digest cellulose. Perhaps their stomachs would have the bacteria we need to pre-digest woodchips to make them edible by ruminants? Of course we'd have to act fast, before they all get slaughtered for their meat... the feed conversion ratio for meat is a lot worse than for ...
by Cererean
Sun Mar 03, 2019 11:12 pm
 
Forum: 4. Food and Clothing
Topic: Book:"Feeding everyone no matter what"
Replies: 2
Views: 14177

Re: Howdy from Wyoming USA

For whatever it's worth, welcome.
by Cererean
Mon Nov 05, 2018 9:21 am
 
Forum: New members
Topic: Howdy from Wyoming USA
Replies: 1
Views: 13130

Caveman Chemistry

http://www.cavemanchemistry.com/ I'll have to buy this book. I don't know if it includes Sulphuric Acid, but I learned recently that there *is* a way to produce it using Gypsum and clay - roasted together they give off Sulphur Trioxide, which is dissolved in Sulphuric Acid to produce Oleum, which i...
by Cererean
Sun Nov 04, 2018 8:27 pm
 
Forum: 11. Advanced Chemistry
Topic: Caveman Chemistry
Replies: 0
Views: 44017

Re: Seven Sustainable Technologies from JMGreer

If you can build a radio, surely you can built a relay? So we wouldn't need to forgo computers entirely.
by Cererean
Thu Sep 27, 2018 2:07 pm
 
Forum: 1. The End of the World as we Know it
Topic: Seven Sustainable Technologies from JMGreer
Replies: 2
Views: 47422

Pharmacopeia

https://en.wikipedia.org/wiki/Pharmacopoeia https://en.wikipedia.org/wiki/WHO_Model_List_of_Essential_Medicines What I've had in mind (for at least five years...) is a book that would contain a list of essential medicines, as well as the plants that contain precursor chemicals, how to extract them,...
by Cererean
Wed Sep 26, 2018 9:08 pm
 
Forum: 7. Medicine
Topic: Pharmacopeia
Replies: 0
Views: 44407
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