Today I read big news from MIT engineer. They make new device that take water from air without using heat. Before system need many hours of sunlight to warm material and get water out, but now they use ultrasound vibration to shake water molecule out very fast.
This device is small, can run with solar panel, and can do many cycle in one day. Engineer say even in dry desert air have small moisture, and this system make drink water from that. Maybe future this become big solution for place no have clean water. Simple panel, shake the material, water drip out quick. Very smart idea.