September 23, 2007
An instructor uses litmus paper to test the pH of a water sample for a lesson about the chemical properties of river water during the Yampa Valley Science School at the Perry-Mansfield Performing Arts School and Camp outside Steamboat Springs on Wednesday.
Stories this photo appears in:
Sixth-graders learn about environment at science school
Christine Krientz ran through an open meadow Wednesday swinging a butterfly net wildly through the air, trying to snag an insect.
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