Scientists are tracing ancient helium trapped beneath South Africa’s gold fields, revealing how rare gas survives for billions of years.

Federal government laboratory tests have verified a Pulsar Helium appraisal well near Babbitt contains among the highest helium-3 levels on Earth.

Interlune is developing robots to harvest a valuable gas on the lunar surface that could have a big impact on Earth. In the lobby of Interlune, a 3-foot-wide tabletop diorama shows an idyllic, ...