Missing nitrogen: A dramatic game of cosmic hide-and-seek deep within our planet

Earth's rocky layers are mysteriously low in nitrogen compared with carbon and argon. A scientific team explored our planet's molten youth using advanced quantum mechanical simulations, revealing nitrogen's secret: under extreme pressure, it chose to hide in the iron core 100 times more than the mantle. This solved why Earth's volatile ratios involving nitrogen look odd. The findings suggest the necessary ingredients for developing a habitable world may have been settled in the early Earth.