- Earth’s Core Might Maintain Hidden Reservoirs of Helium, Scientists Uncover SciTechDaily
- ‘Primordial’ helium from the beginning of the photo voltaic system could also be caught in Earth’s core Area.com
- Centre of the Earth may maintain giant reservoir of iron–helium compounds Chemistry World
- Primordial Helium-3 Might Be Locked in Earth’s Core, Examine Finds Devices 360