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A study maps global arbuscular mycorrhizal fungal networks, finding their threads can stretch far beyond Earth and that they are threatened by agricultural conversion, with grassland ecosystems holding 40% of the world's biomass but being poorly protected.
A new study has produced the first global map of arbuscular mycorrhizal fungi networks, revealing their vast extent—110 quadrillion kilometers—and highlighting threats from agriculture. The findings underscore the importance of these fungi for climate regulation and soil health.