Lighter-than-air zeppelin travel may just make it off the ground, if the market agrees. Story by Jasmine Baehr • 1w. I n an age when sustainability is often sold with more sizzle than substance, ...

Lighter-than-air vehicles (or LTAs) depend on the same basic physics that creates bubbles in water. They’re filled with extremely light gas, like helium, which allows them to achieve lift and ...

The first lighter-than-air craft was the Montgolfier brothers' hot-air balloon, which carried two passengers on a 25-minute flight over Paris in 1783. Balloons lifted by hydrogen gas soon followed.

And on that tragic note, the era of lighter-than-air passenger travel ended. Later, as the war ground on, the US government saw the potential for using lighter-than-air ships to spot subs.

But there is a lot to learn about what officials described as “lighter-than-air objects” without a propulsion system. “They might be balloons,” Maj.-Gen. PAUL PREVOST said.

Lighter-than-air zeppelin travel may just make it off the ground, if the market agrees Historian warns the future of giant zeppelins depends on profit margins, not nostalgia or environmental promises.