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A new statistical method finds that many genetic variants used to determine trait-disease relationships may have additional effects that GWAS analyses don’t pick up.

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image: Origin of Frog-Killing Chytrid Fungus Found

Origin of Frog-Killing Chytrid Fungus Found

By Ruth Williams | May 10, 2018

DNA evidence points to Asian amphibians as the source of a fatal disease that has been wiping out frogs across the globe.  

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image: Ancient Humans Had Hepatitis B

Ancient Humans Had Hepatitis B

By Abby Olena | May 9, 2018

Analyses of more than 300 ancient human genomes show that Hepatitis B virus has infected humans for at least 4,500 years and has much older origins than modern viral genomes would suggest.

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image: Genetic Adaptation to Cold Brought Migraines With It

Genetic Adaptation to Cold Brought Migraines With It

By Viviane Callier | May 3, 2018

Humans living in higher latitudes tend to have a variant of a gene involved in sensing cold temperatures, but it comes with a cost.  

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image: Reprogrammed Cells Treat Diabetes in Mice

Reprogrammed Cells Treat Diabetes in Mice

By Abby Olena | May 2, 2018

Researchers used a trio of transcription factors to transform pancreatic duct cells in vivo into β-like cells that secrete insulin and improve diabetes symptoms.

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image: How Bacteria Eat Penicillin

How Bacteria Eat Penicillin

By Shawna Williams | April 30, 2018

Scientists work out the specific genes and biochemical steps required for digesting the very drugs designed to kill microbes.

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Rather than getting a gene for its original function, a horizontal gene transfer provides the raw material for evolutionary innovation.

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image: Free Divers From Southeast Asia Evolved Bigger Spleens

Free Divers From Southeast Asia Evolved Bigger Spleens

By Anna Azvolinsky | April 19, 2018

The adaptation gives better endurance to the Bajau people, known as sea nomads, by increasing spleen size and, in turn, boosting the number of oxygenated red blood cells when diving.  

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image: Monitoring Mutations with Microfluidics

Monitoring Mutations with Microfluidics

By Ruth Williams | March 15, 2018

A device dubbed the “mother machine” enables real-time observation of mutagenesis in single bacterial cells.  

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image: Slime Mold in Residence

Slime Mold in Residence

By Ashley P. Taylor | March 2, 2018

At Hampshire College, students and faculty use the amoeba Physarum polycephalum—both a “visiting scholar” and a model organism—to examine human societal and political quandaries.  

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