Understanding water scarcity - Physical water scarcity occurs when there is not enough water to meet all demands. Economic water scarcity is caused by a lack of investment in water or a lack of human capacity to satisfy the demand for water, even in places where water is abundant.
A boy gathering dirty water. Lack of access to clean water is a crisis. Help solve the problems of an entire village by choosing to donate a well to provide clean water. Make a corporate donation or gift in the name of your clients.
View full lesson: http://ed.ted.com/lessons/fresh-water-scarcity-an-introduction-to-the-problem-christiana-z-peppard Fresh water is essential for life -- and there's not nearly enough of it for the world right now. Why is that, and what could we do? Christiana Z. Peppard lays out the big questions of our global water problem. And no, shorter sh...
Where we get our fresh water? - Fresh water accounts for only 2.5% of Earth's water, yet it is vital for human civilization. What are our sources of fresh water? In the first of a two part series on fresh water, Christiana Z. Peppard breaks the numbers down and discusses who is using it and to what ends. Lesson by Christiana Z. Peppard, animation by Jeremy Collins.