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A mouse study reveals a causal link between changes in intestinal microbiota and increasing inflammation as the rodents age.

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image: Image of the Day: Bygone Blood Cells

Image of the Day: Bygone Blood Cells

By | April 11, 2017

These fossilized red blood cells (right), found in an ancient, blood-engorged Amblyomma tick (left), likely belonged to primates.

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Mice exposed to low doses of penicillin in utero or as young pups exhibited long-term behavioral differences not seen in their non-exposed counterparts, according to a study.

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image: Image of the Day: Ancient Worm

Image of the Day: Ancient Worm

By | April 10, 2017

Unlike related species, Ovatiovermis cribratus, a lobopodian from the Cambrian period, did not have a hard, protective shell.

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Recolonizing middle-aged animals with bacteria from younger ones kept killifish alive longer than usual, researchers report.

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image: In Certain Social Bees, Gut Microbiomes Follow Phylogeny

In Certain Social Bees, Gut Microbiomes Follow Phylogeny

By | March 29, 2017

Corbiculate bees and their gut-dwelling microbes have been coevolving since the social species evolved from their solitary ancestors around 80 million years ago, scientists suggest. 

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image: Dinosaur Phylogenetic Tree Shake-Up

Dinosaur Phylogenetic Tree Shake-Up

By | March 24, 2017

An analysis of 74 dinosaur species leads a group of researchers to reorganize the extinct animals’ evolutionary history.

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image: Inflammation Drives Gut Bacteria Evolution

Inflammation Drives Gut Bacteria Evolution

By | March 16, 2017

Viruses within Salmonella rapidly spread genes throughout the bacterial population during a gut infection, scientists show.

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image: Image of the Day: Age-Old Algae

Image of the Day: Age-Old Algae

By | March 15, 2017

This 1.6 billion-year-old fossil, which resembles red algae, is the oldest plant-like fossil ever found.

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image: Image of the Day: Primordial Plants

Image of the Day: Primordial Plants

By | March 9, 2017

This ancient relative of the Ginkgo biloba (Umaltolepis mongoliensis) dates back 100 million years, to the early Cretaceous Period.

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