Tom Pankratz on Making Saltwater Fit to Drink | EarthSky
In the past, desalination relied on boiling water. Today's newer techniques use a semi-permeable membrane. Hear Tom Pankratz, director of the International Desalination Association, explain the newest innovations.
Assign directly to your students using the code or link above, without having them log in. Simply tell your students to go to
www.pbsstudents.org and enter the Assignment Code, or click on the Assignment URL to share the assignment as a link.