Summary
Follows up the freshwater-problems episode with solutions — desalination, conservation technology, water recycling, and policy approaches — showing that humans are engineering answers to the water crisis.
Viewer safety
All ages
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Teaching resources
Discussion questions
Discussion
- What is desalination? What are its limitations?
- How can greywater recycling help with water scarcity?
- What are the trade-offs between conservation and building new water infrastructure?
- Who should be responsible for solving water scarcity — individuals, governments, or engineers?
Quick work-a-long
Vocabulary: desalination, greywater, conservation, recycle, infrastructure, policy.
Try it: Design a simple rain-collection system on paper for your school. What materials would you need? How much water could you collect in a typical rainstorm? What would you use it for?