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New research provides evidence that the ancient hominin species might not be so ancient after all.

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The infamous "Baby Louie" embryo is a giant oviraptorosaur fossil from China that resembled a gargantuan bird.

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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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image: Learning Your Stripes

Learning Your Stripes

By Mary Beth Aberlin | May 1, 2017

Science’s lowest common denominator has always been patterns.

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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 Catherine Offord | May 1, 2017

Immune cells called macrophages shuttle cellular messages in the skin.

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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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By analyzing the genomes of 161 dog breeds, scientists discover how and when certain canine breeds emerged.

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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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