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Puddle of scents
When it rains, it emits a pleasant scent called petrichor. Scientists have identified a few sources for this smell, one being bacteria found in the soil. When it rains, the drops land on bacteria called actinomycetes that release a chemical into the atmosphere, creating the scent. Another cause of the earthy aroma is ozone. During large thunderstorms, lightning breaks oxygen and nitrogen molecules to create nitric oxide, which interacts with other compounds it the atmosphere to produce ozone.
Puddle of scents
When it rains, it emits a pleasant scent called petrichor. Scientists have identified a few sources for this smell, one being bacteria found in the soil. When it rains, the drops land on bacteria called actinomycetes that release a chemical into the atmosphere, creating the scent. Another cause of the earthy aroma is ozone. During large thunderstorms, lightning breaks oxygen and nitrogen molecules to create nitric oxide, which interacts with other compounds it the atmosphere to produce ozone.