Scientists uncover active microbial life thriving inside fog droplets
New research shows that fog droplets can support growing bacteria, turning the atmosphere into a temporary habitat for microbes.
A study published in Environmental Microbiology examined fog water from Pennsylvania and discovered bacterial populations that increase after fog events, implying active growth. The bacteria are colorful, pigment-protected species commonly found on plants and soil, and they can process formaldehyde, a rare metabolic capability. Experts say this evidence moves fog from a mere moisture source to a genuine, albeit fleeting, habitat.
Parallel research at the Amazon Tall Tower Observatory captured fog samples containing dozens of fungal and bacterial species, though their ecological functions remain uncertain. Researchers highlight the difficulty of tracking airborne microbes, but the emerging field of fog microbiology suggests these droplets could influence atmospheric chemistry and nutrient dynamics. The findings are being hailed as a major step forward in understanding life suspended in the air.
Why it matters
It reveals that atmospheric fog can host active microbes, reshaping our view of airborne ecosystems and their impact on climate chemistry.
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