Down-pouring bacteria

It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena. Some types of bacteria hover in the air, bonded to the steam that rises from the surface of the sea or the leaves of trees, and let themselves be carried away by high winds. To go back to the ground, they produce special substances that can condense steam from the clouds, thus causing downpours. In this way, they can move and cover long distances.

With the sponsorship of the Italian Ministry of Education, Universities and Research
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