Morocco's Fog Catchers Extract Water From Air
On the edge of the Sahara, in southwest Morocco, giant nets catch moisture from the air, turning fog into drinking water.
The technique involves a fine mesh on which tiny fog droplets -- typically 1 to 40 millionths of a meter -- gather and merge until they have enough weight to travel down into a reservoir.
Set in a dry, mountainous area, it's the world's largest functioning fog collection project, spanning 600 square meters, according to Dar Si Hmad, the women-led Moroccan NGO that runs it.
Chris Elt