reply to post by scarlett1125
They are available commercially.
You can even build them. If you know just a little about electricity and how to use general garage tools, you can build one over a couple
As far as community currencies go, you just have to be a person who can get the attention of the community, and sell them on the idea of agreeing to
trade services, labor, and materials with each other. The "currency" is their agreement. You can write it down in a logbook, print it on paper, or
if you really trust each other, shake hands.
Google "ithaca hours" for more information on how a city in New York has successfully used a community currency for years.
Here are a couple links on wind turbines:
This one will power a small tv, computer, radio. Homemade less than $100.
These can power anything, depending on how large you scale up the design:
If the going gets rough and you need a way to make clean water, here's an idea I came across to get pure water from filth:
Get a kiddie swimming pool... you know, those shallow little blue plastic or inflatable ones.
Pour a few inches of water into it.
Put a bucket or pan in the middle.
Cover and secure the pool with a plastic sheet. The stuff you use to protect your floor from splashes when you paint walls or ceilings is the kind of
thing to look for.
In the middle of the plastic sheet covering the pool, place a small object like a rock to give the plastic a slope downward from the edges toward the
center of the pool.
Place the whole thing out in the sun.
Water will evaporate from the pool and collect as condensation on the plastic sheet above it. Because of the slope of the plastic sheet, it will run
downward toward the middle and drip into the bucket. The water you put in the pool itself can be so dirty it will look like mud, but what collects in
the bucket is 100% pure, distilled, bacteria-free water.
Requires no energy (just sunlight) and the parts are under $25. Can make enough drinking water per day for up to 5 people.
Where there's a will, there's a way!
[edit on 24-5-2008 by ianr5741]