There are many machines on the market today that use air to make water. Certain alkalines are used to extract water from air, since our air has moisture in it. You can find more information here: http://www.wired.com/science/discoveries...

You can make water by constructing something called a solar still. To do this you will need an aquarium, some sand, clear plastic, a small container, a plant, and some water. You can find more information here: http://www.teachnet.com/lesson/science/e...