Read at :
http://green.blogs.nytimes.com/2010/04/09/developing-a-water-battery-for-trees/?emc=eta1
Developing a ‘Water Battery’ for Trees
By JIM WITKIN
According to the World Health Organization, 1.2 billion people – or almost 1 out of 5 people in the world – are without access to safe drinking water. And even in areas with access, 70 percent of water withdrawn from fresh groundwater sources is used for agriculture.
But using groundwater to grow crops and trees doesn’t make sense to Pieter Hoff, a Dutch inventor. Not only are traditional irrigation techniques inefficient because most of the water is lost to evaporation, Mr. Hoff says, but water can be easily captured from the atmosphere to grow just about anything.
(continued)
=================
See also :
http://poptech.org/blog/following_pieter_hoffs_efforts_to_combat_desertification
Following Pieter Hoff’s efforts to combat desertification
We’ve been following the work of Pieter Hoff for some time now, along with his invention, the Groasis Waterboxx, a watering technology designed to grow trees in locations thought to be inhospitable. In fact, he first shared this invention and its potential impact with us at PopTech 2010.
