Is the Earth's Core Leaking?

March 26, 2006
Part of the Public Lecture Series


Earth and Environmental Sciences
Higgins Professor

Against probability, the Earth's liquid metal outer core may be leaking. How this happens is not yet clear. Maybe cooling upsets chemical balances. Perhaps activity in the biosphere produces materials that are corrosive to the core. How do we understand what goes on thousands of miles deeper than any mine? High-pressure chemistry laboratory experiments provide some answers.