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Harvesting lab-raised zebrafish based on their size led to differences in the activity of more than 4,000 genes, as well as changes in allele frequencies of those genes, in the fish that remained.

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image: More Details on How Pesticides Harm Bees

More Details on How Pesticides Harm Bees

By | May 3, 2017

Scientists report that thiamethoxam exposure impairs bumblebees’ reproduction and honey bees’ ability to fly.

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image: Polio Vaccine Pioneer Dies

Polio Vaccine Pioneer Dies

By | May 2, 2017

Julius Youngner collaborated with Jonas Salk on the polio vaccine, and later identified interferon gamma and contributed to an equine influenza vaccine.

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The 19th century biologist’s drawings, tainted by scandal, helped bolster, then later dismiss, his biogenetic law.

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Time-lapse imaging shows the immune cells transferring chemical signals during pigment pattern formation in developing zebrafish.

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image: Infographic: How the Zebrafish Got Its Stripes

Infographic: How the Zebrafish Got Its Stripes

By | May 1, 2017

Immune cells called macrophages shuttle cellular messages in the skin.

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image: Infographic: Web of Retractions

Infographic: Web of Retractions

By | May 1, 2017

See coauthors' connections to eight researchers with problematic papers.

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From fish harvests to cottonwood forests, organisms display evidence that species change can occur on timescales that can influence ecological processes.

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Guppies transplanted between different communities in Trinidadian streams evolved in response to changes in predation threat in just a few generations.

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The lungs of extremely premature lambs supported in a closed, sterile environment that enables fluid-based gas exchange grow and develop normally, researchers report.

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