Modern Marvels: Gas Tech: Gas--it makes a balloon go up, cooks our food, and fills our lungs. But this invisible state of matter does far more, and has a very visible impact on the world. We follow natural gas from well tip to stove top and trace its use from 3rd century... (more details for Modern Marvels: Gas Tech)

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File by Mark Winters (#1961)
2012-03-09 Grade: 11-12