Yes, there is evidence that the Earth’s core is leaking. Scientists have found: 

• High levels of a helium isotope in lava flows in Canada 
• Record concentrations of a helium isotope in 62-million-year-old Arctic rocks 
• Tungsten from the core filtering out into the mantle and sometimes migrating to the surface of the Earth’s crust 
• A shift in the ratio of tungsten and hafnium found in minerals from the core and mantle 

The findings suggest that materials, including helium, may be escaping from the core. This could reframe our understanding of the Earth’s internal processes. 

The Earth’s core has been leaking into other layers of the planet for the past 2.5 billion years. The findings have ignited discussions and debates among experts.

Earth’s core is leaking an isotope that can produce a year’s electricity from just 100 kg, finds a study. The discovery supports the idea that materials, including helium, may be escaping from the core, potentially reshaping our understanding of the Earth’s internal processes.

The Earth’s core is molten because of three main sources of heat: 

• Heat from when the planet formed and accreted 
• Frictional heating, caused by denser core material sinking to the center of the planet 
• Heat from the decay of radioactive elements 

The Earth’s temperature reached the melting point of iron after about 500 million years. The melting point of iron is about 1,538° Celsius (2,800° Fahrenheit). 

The Earth’s inner core is not molten. It is made of solid nickel and iron, but it is very hot and under tremendous pressure caused by gravity. The outer core is a molten liquid.

The Earth’s core has been cooling for 4.5 billion years. Scientists have found that the Earth’s core is cooling faster than expected. 

Bridgmanite, a mineral found between the Earth’s core and mantle, is 1.5 times more conductive than previously thought. This means that heat is transferred from the core to the mantle more efficiently, causing the core to cool faster. 

As bridgmanite cools, it turns into a different mineral called post-perovskite. This creates a cascading effect, where more bridgmanite cools faster, which in turn creates more post-perovskite. 

The cooling of the Earth’s core is not likely to affect life on the planet

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