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image: Stressed Rodents Make Different Choices

Stressed Rodents Make Different Choices

By Katarina Zimmer | March 1, 2018

Chronic stress tweaks a circuit in the brain that influences how lab rodents make tough decisions. 

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The variation may help explain why stocked salmon don’t fare as well in the ocean.

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image: Researchers Catalog Earth’s Microbiome

Researchers Catalog Earth’s Microbiome

By Katarina Zimmer | February 1, 2018

The new database includes data from 27,000 samples collected at sites ranging from Alaskan permafrost to the ocean floor.

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Researchers find consistent behaviors and brain activity in an international study.

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image: Sex Differences in Opioid Analgesia: A Complicated Picture

Sex Differences in Opioid Analgesia: A Complicated Picture

By Catherine Offord | January 1, 2018

Researchers are beginning to tease apart the mechanisms underlying differences in how males and females respond to powerful painkillers.

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image: Cataloging Fungal Life in Antarctic Seas

Cataloging Fungal Life in Antarctic Seas

By Ignacio Amigo | December 1, 2017

Brazilian researchers report a relatively large diversity of fungi in marine ecosystems surrounding Antarctica, but warn that climate change could bring unpleasant surprises.

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Aggressive little marine predators, mantis shrimps possess a mushroom body that appears identical to the one found in insects.

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image: An Eye Scan for Alzheimer’s Disease?

An Eye Scan for Alzheimer’s Disease?

By Shawna Williams | November 1, 2017

Researchers aim for a routine screen to detect the neurodegenerative disease—decades before symptoms appear.

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image: Lessons in Memory from a Champ

Lessons in Memory from a Champ

By Jef Akst | November 1, 2017

A four-time winner of the USA Memory Championship is helping scientists understand how the brain works.

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Researchers explore genetic engineering to produce super-tough fibers.

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