BENGALURU (Reuters) - Two NASA astronauts aboard Boeing's Starliner will stay on the International Space Station for months because of a faulty propulsion system whose problems included helium leaks.

The price of helium shot up six years ago and more than a dozen wildcatters — risk-taking prospectors who drill exploratory wells — headed to northeastern Arizona with the hope of striking it rich.

Helium is slipping into a new era of scarcity just as the world leans on it more heavily for medicine, microchips and spaceflight. At the same time, geologists are uncovering clues that very old rocks ...

Otis, Kansas, produces and ships helium used to inflate Macy’s parade balloons. Messer plant cools, compresses and liquefies gas used to fill more than 30 balloons. Otis plant has supplied Macy’s ...