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image: Study: Diet Contributes to Brain Size

Study: Diet Contributes to Brain Size

By | March 30, 2017

The results of a historical primate behavior analysis suggest that species with fruit-filled diets evolved larger brains.

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image: Should Healthy People Have Their Exomes Sequenced?

Should Healthy People Have Their Exomes Sequenced?

By | March 24, 2017

With its announced launch of a whole-exome sequencing service for apparently healthy individuals, Ambry Genetics is the latest company to enter this growing market. But whether these services are useful for most people remains up for debate.  

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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: Pathway to Polio Virulence Revealed

Pathway to Polio Virulence Revealed

By | March 23, 2017

Using epidemiological and laboratory data, scientists have mapped out a sequence of mutations through which the attenuated oral polio vaccine reverts to a virulent virus.

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image: Image of the Day: Tubular Origins

Image of the Day: Tubular Origins

By | March 23, 2017

Murine neural tubes, with each image highlighting a different embryonic tissue type (blue). The neural tube itself (left) grows into the brain, spine, and nerves, while the mesoderm (middle) develops into other organs, and the ectoderm (right) forms skin, teeth, and hair.

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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: Sharks May Have Evolved from Acanthodians

Sharks May Have Evolved from Acanthodians

By | March 14, 2017

Analysis of an ancient shark fossil provides the strongest evidence to date that modern sharks derive from a class of 400 million–year-old bony fish.

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“Buena vista” hypothesis suggests that changes in the sizes of eyes, rather than a shift from fins to limbs, led fish to transition to land more than 300 million years ago.  

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Researchers report growing a mouse embryo using two types of early stem cells.

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image: Cortical Interneurons Show Layer-Specific Activities

Cortical Interneurons Show Layer-Specific Activities

By | March 2, 2017

Researchers examine the firing patterns of interneurons throughout all layers of the somatosensory cortices of alert mice.  

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