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A new technique reveals certain neuronal connections grow larger and denser when memories are made.

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image: Worms’ Magnetic Sense Questioned

Worms’ Magnetic Sense Questioned

By Abby Olena | April 25, 2018

Unsuccessful attempts to reproduce the results of a 2015 study reporting that C. elegans orient themselves by Earth’s magnetic field spark debate among researchers.

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Researchers used the genome sequence of Artemisia annua to boost the plant’s production of artemisinin.

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image: Exercise Warms the Brain, Causing Mice to Eat Less

Exercise Warms the Brain, Causing Mice to Eat Less

By Kerry Grens | April 24, 2018

Directly activating a heat sensor also sensitive to capsaicin in chili peppers in the hypothalamus had the same effect as exercise.

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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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Drug-free environments, such as a designated ward in a hospital, might reduce the strength of selection for resistance.

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image: Male Fruit Flies Take Pleasure in Having Sex

Male Fruit Flies Take Pleasure in Having Sex

By Jim Daley | April 20, 2018

Sex-deprived males seek out alcohol.

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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: How Kidney Cancer Evolves

How Kidney Cancer Evolves

By Jim Daley | April 18, 2018

Renal cell carcinoma tumors have three different evolutionary fates, each associated with specific clinical outcomes.

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image: Image of the Day: Retinal Cell Implant

Image of the Day: Retinal Cell Implant

By The Scientist Staff | April 17, 2018

For the first time, a transplant of replacement tissue grown from stem cells has been shown to be feasible for patients with macular degeneration.

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