Nigeria
Sand Origin
Ajali Sandstone, Iva Valley, Enugu
Local Sand Trivia
Översättning av alla landfakta är sommaruppgiften. så länge håll tillgodo med den engelska:
Wet sand + the laws of thermodynamics are the base of an innovative, inexpensive, portable pot-in-pot ”desert refrigerator” changing lives in Nigeria. The only maintenance required is daily addition of water. When water evaporates from sand placed between two pots the inner one is cooled to as low as 5ºC/40ºF. Its use, for example, means that spinach last 12 days instead of hours, tomatoes 3 weeks instead of just days. The inventor combined traditional craft with science to easy everyday lives.
