This powerpoint presentation can be used to kick off a Project Based Learning unity on Water. You can use it as a class discussion tool, a gallery walk, or just as strong images to get students to think. The idea is to get students to think about the scientific aspects of water, the social impacts of water, the cultural differences in water needs and usage, etc. This PBL could be taken in so many directions. You can even empower your students to begin researching engineering designs that have changed the filtration, etc of water for safety.