I was reading an article over harvesting water out of fog. Great idea, after all, why not, right?

Then the article went on that this is a great solution for area who have no water. Seems great but...

I have been in the desert (Sahara) for an extended period (18 months) of time. Stone 'exploded' due to below 0c temperature at night in winter*. So, there is water. Water collection at night (when not freezing) is possible using a wide canvas shaped as an inverted cone (at most half a glass)**. So there is water around, just not enough.

One thing I have never seen is fog. Fog needs lots of water in the air to form, not just traces, after all fog is nothing but a low level cloud. I looked at the way they tested their apparatus and was left wondering... Yes, it is more efficient than other systems but... If you test is a lush area how can anyone claim it is a solution for area with no water?

I am really puzzled by unrealistic claims.

The question? Have you been in any arid area of the world where there is fog? Am I wrong when I shake my head in denial?

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* A tiny amount of water seeps into the stone cracks during the warm/hot months and expand while freezing in winter. The stones split with a sound that ressemble a gun shot.
** Collects the trace amount of dew. Reverse the cone during the day and you have air circulation but this will dry you up faster than anything because the air will permit the sweat to evaporate at a greater rate. You may feel cooler but you die dried up!!!! (The Arab clothing gear made of multiple layers that also protect the head in the desert makes more sense than we - as westerner - think.)