Wildlife and Environment Society of South Africa
WESSA maintains a watchful eye on the South African environment
Founded in 1926, the Wildlife and Environment Society of SA is South Africa's oldest and largest non-government membership-based environmental organisation. WESSA maintains a watchful eye on the South African environment through its extensive network of Regional Offices , Branches (volunteer groups acting for thei ...learn more
GROUP DETAILS
Created: Oct 18, 2007
Updated: Oct 08, 2009
Membership: Open
Semi-Private
The Zeer Pot - a Nigerian invention keeps food fresh without electricity
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The zeer is a large pot inside which fits another smaller pot with a clay lid. The space between the two pots is filled with sand, creating an insulating layer around the inner pot. The sand is then kept damp by adding water at regular intervals — generally twice a day — reducing the temperature within the inner post decrease.
