Water Harvesting from Air could help water crisis

This is pretty interesting work. Unlike zeolites which are the more common adsorbing material MIT and Berkeley have come up with "metal-organic-frameworks" or MOFs that by their structure can bind to water vapor in the air and release it as liquid water. And this works down to 20 - 30% humidity so over a much more interesting space.

What I don't know is if you could put one of these on your roof for the solar access and circulate air from your building through it. Dehumidifying during the summer to maximize comfort.