Production of carbon dioxide from reaction of citric acid and baking soda ...

An unmanned “sounding balloon” has risen to 140,000 feet (26½-miles), breaking the altitude record for any man-made object except rockets. So the U.S. Army Signal Corps announced last week.

Although these early crude balloons were a far cry from today's high-tech contraptions, the science of ballooning and sending humans aloft had begun. In the years to follow, humans had access to ...

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 ...

Imagine you're at a hot air balloon event. The balloonists are busy preparing for flight. They spread out the enormous balloons on the grass and check all the lines. The talk is all about today's ...