Transpiration can save lives.
If you find yourself in an emergency situation without drinking
water a thin plastic sheet could be the solution to your problem.
Try this just for the sake of experimentation.
How it works: The soil and plant material in the hole give off water
vapour- transpiration takes place. The moisture in the air under the
plastic sheet condenses on the underside of the plastic. These drops
of water roll down the plastic into the can.
Note: When the hole
is no longer needed, be sure to replace the soil.
a full size diagram of how to make a still. Note this is an Adobe
pdf document for which you will need Adobe Acrobat.
In Uganda, clean
drinking water available straight from the tap is a luxury and is
not available to most of the population. The Government has ensured
that Kampala, the capital city has a supply of safe drinking water.
In other towns, although there is a plumbing system and toilets and
baths, a large plastic ferry can, a basin and a bottle of boiled water
is the major water supply for tourists in hotels. But at least they
have not had to walk for miles to collect their own water.