Cassy Jones (left), 12, and Jordan Ashley (in red), 11, watch in wonder as their Earth Day project comes to life: When a cup of ice is placed in a water bath holding a bottle of mineral water, and hot water is added, the gases in the bottle are forced into the balloon by the temperature change. The project was part of a class on the greenhouse effect taught by U.S. Army Garrison Stuttgart Directorate of Public Works Environmental Division staff members at Robinson Barracks Elementary/Middle School April 19 in honor of Earth Day (April 22).
2011-05-05
