Water+and+Heidi+pictures

Below is the TED talk by Richard Seymour that references the water filter and the Heidi portrait.

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Heidi's picture, image used in session, was captured from the TED talk using Jing.

Article with overview of the walter filtration bags and short video. Image used in session. []

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Another photo option to use in the classroom []

Further articles about the water filtration bags with pictures of the filtration bag. [] [] []