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May 23, 2018

Soft tissue fossils of a predator from the Cambrian era, belonging to the arthropod family. Top left: A bump on the front of the modified creature shows a resemblance to modern arthropods. Bottom right: A full-body specimen of the fossil shows one pair of forelimbs (indicated by white arrows) and a mouth containing teeth (indicated by a black arrow) on the head. Photography: A. Daly, University of Oxford

A new study of fossils made it possible to be more precise in the date of the appearance of the first animals before 540 m.

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Flash floods are characterized by short periods of heavy rain. In areas where the soil does not allow percolation. Photo: ilan molcho, Flickr

The reason why the storms are stronger

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