The most authoritative answer in 2024
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Ethan Patel——Works at the International Labour Organization, Lives in Geneva, Switzerland.
As a geophysicist with a focus on the Earth's internal dynamics, I can provide an informed perspective on the hypothetical scenario of the Earth's core cooling down. If the core were to cool significantly, it would have profound implications for our planet. The core is the source of the Earth's magnetic field, which is generated by the dynamo effect caused by the movement of molten iron and nickel within the outer core. This magnetic field serves as a protective shield, preventing harmful cosmic radiation from reaching the Earth's surface and preserving the atmosphere by deflecting solar wind. **read more >> -
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Grace Thompson——Studied at Harvard University, Lives in Boston. Passionate about environmental conservation and currently working for a non-profit organization.
If the core were to cool completely, the planet would grow cold and dead. ... Cooling also could cost us the magnetic shield around the planet created by heat from the core. This shield protects Earth from cosmic radiation. The shield is created by a convection process caused by constantly moving iron.read more >>
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