How do these giant balloons work? What makes them both easier and more complicated than a normal-size balloon?

Early hot-air balloons had to be fueled on ... So they were soon replaced by envelopes filled with buoyant gases, such as hydrogen and helium. These balloons continued to rack up records for ...

NEW YORK (AP) — They're up, up and — almost — away. The massive helium balloons that will float through New York City for the Macy’s Thanksgiving Day Parade took shape on Wednesday, when they were ...

The parade’s biggest stars? The massive helium-filled balloons soaring above Manhattan’s streets. Featuring characters from pop culture—ranging from beloved cartoons to superheroes—these ...