Earth's mysterious core appears to be leaking, leaving scientists baffled

• Scientists have spotted high levels of a specific type of helium called ³He/⁴He in Arctic lava. 
• This could suggest the Earth's core is "leaking" helium.
• The findings could upend what we knew about our planet's core, which was thought to be sealed away. 

Earth's mysterious core is, once again, baffling scientists with its strange behavior.

A study of 62-million-year-old lava flows on Baffin Island in the Arctic Archipelago has found unusually high levels of helium-3 (³He), a rare isotope that is associated with the insides of our planet.