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 ...

Tourists visiting the world's UNESCO heritage site Ha Long Bay can take in panoramic views from the sky aboard stationary hot air balloons starting this April.

But [Becky] shows how to make a hot air balloon using nothing but tape and garbage bags. The idea is quite simple. You form a large envelope from black trash bags and fill it with air. Becky does ...