Cracker question because helium balloons are actually a pretty controversial topic. Some people argue that they are harmful to the environment because on returning to Earth, animals mistake them ...
Seeing dozens of hot air balloons filling the sky would be a gorgeous sight, and you can see just that in Indiana this summer ...
Credit: Urban Sky MOUNTAIN VIEW, Calif. — Urban Sky, a company that has developed portable stratospheric balloons to perform imaging and other applications typically done by satellites ...
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