" It is water that is absolutely central to every function of your life."

Imagine a filter-less water filter that runs on the heat of the sun.

Salty water from the Gulf of Mexico, or even bacteria-contaminated water from a creek, could be run through it.

Two streams would come out from the other end. One would be very pure water that would be refreshing to drink. The other stream would have a higher concentration of whatever you are trying to get rid of.

The system already HAS been made and tested in a configuration the size of a traveling coffee mug. Theoretically, it could be scaled up to deliver millions of gallons of potable water per day.

Read more at the Sarasota Herald-Tribune.