ENLARGE
Teri Spraggins/Special to the Nevada Appeal Mark Twain Elementary School student Christian Senda pours a red solution into one soil soaker to compare water drainage with the hydrogels, with student Cindy Cardenas in the background. Cooperative Extension instructor Jim Barcellos supervised the project as part of 4-H National Science Day.
Christian Senda, 12, is eager to show people how they can conserve water in their potted plants through the use of superabsorbent polymers called hydr...
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