Helium-3 could be bound-up with iron and oxygen deep within the Earth – Physics World
Helium from Earth's core hints at planet's formation | Popular Science
Earth's core could be 'leaking helium' as scientists find evidence of 'how planets form' - Daily Star
Further evidence of Earth's core leaking found on Baffin Island
Infographic: Helium, A Valuable Gas Not To Be Taken Lightly
Metallic helium in massive planets | PNAS
The Hydrogen — Helium, Nitrogen — Oxygen Mystery | by Sam Kneller | The Explanation | Medium
Helium: A Natural Gas Byproduct with Unique Properties and Uses
Baffin Island rocks point to rare form of helium leaking from Earth's core - The Weather Network
Is a lot of the shortage of helium on Earth just due to helium balloons over the years? - Quora
Is Earth's Helium Running Out? - Total Helium
The Origin of Earth's Helium | Discover Magazine
ESSD - A comprehensive global oceanic dataset of helium isotope and tritium measurements
helium 3: Earth's core is leaking an isotope that can produce a year's electricity from just 100 kg, finds a study - The Economic Times
Primordial Helium Isotope is Leaking Out of Earth's Metallic Core: Study | Sci.News
How to Make a Helium Atmosphere - NASA
Helium cycle « KaiserScience
Helium: An “Escape Artist” on Earth | OILWOMAN Magazine
How some elements escape the Earth's atmosphere | Britannica
A deep reservoir of primordial helium in the Earth
Earthquakes control the impulsive nature of crustal helium degassing to the atmosphere | Communications Earth & Environment
Rare primordial gas may be leaking out of Earth's core | Live Science
Potential Slow Leak Detected in Earth's Core, Scientists Report | by The Random Realm | Medium
Helium in Radioactive Rocks - Emmanuel Baptist Church
Like a saggy balloon, Earth's core is leaking helium, a new analysis finds | Salon.com
Physics - A Home for Helium inside Earth
Helium Depletion - Balloons Blow
