यह Link अपनी भाषा में मौजूद नहीं है, में देखें: English (en),
या गूगल अनुवाद का उपयोग:  
हिन्दी भाषा (hi) | भाषा बदलें (Change Language)

d-lab.mit.edu/research/evapora.../clay-pot-coolers

Clay pot coolers are simple and inexpensive technologies that can be made with locally available materials.

By providing a cool humid environment, clay pot coolers can improve the shelf life of many common fruits and vegetables in dry regions. D-Lab is working to identify and disseminate the most effective and practical clay pot cooler designs.