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The Science of BallooningHot Science: Density (This activity is temporarily unavailable while we update it.) Hot Science: Up, Up, and How Far Away? The History of Ballooning The Atmosphere The Jet Stream Global Contenders '97/'98 | Expedition '96/'97 | Fossett | Virtual Flight Science of Ballooning | Teacher's Guide | Resources | Transcript | Balloon Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated October 2000 |