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Cyrille Bret : « Cette Coupe du monde sera bien plus qu’un tournoi de football : elle sera une immense bataille de récits »

La Coupe du monde 2026 ne se jouera pas seulement sur les stades. Entre affirmation de la puissance américaine, tensions migratoires et rivalités diplomatiques, le tournoi s'annonce comme un révélateur des fractures et des rapports de force qui traversent le monde contemporain. La Coupe du monde...

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Earth’s Earliest Animals May Have Thrived Too Easily to Evolve

Artist’s reconstruction of the Fractofusus community: the bottom right features a large Fractofusus around which there are 5 to 8 medium specimens clustered; each of the medium specimens also has small specimens clustered around them; the small specimens therefore form an independent double cluster pattern, namely clusters of clusters. Image credit: C.G. Kenchington.

Fossils from some of the oldest-known animals on Earth, dating from 574 million years ago (Ediacaran period), suggest that cloning, not competition, dominated the Ediacaran seas, slowing evolution until environmental stress helped drive the rise of sexual reproduction and a burst of biodiversity.

The post Earth’s Earliest Animals May Have Thrived Too Easily to Evolve appeared first on Sci.News: Breaking Science News.

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