SMRTR Science & EngineeringJun 14, 2026Ars Technica

Threads of underground fungal networks are long enough to reach beyond the Solar System

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Underground fungal networks are far more vast than previously known, stretching lengths that exceed the distance to the edge of our Solar System. These networks face serious threats, as croplands have half the fungal density of wild ecosystems, while poorly protected grasslands hold 40% of global fungal biomass and are disappearing rapidly.

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