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The new fossils push the origin of the human species back by 100,000 years.

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image: Mammals May Have a 12-Hour Clock

Mammals May Have a 12-Hour Clock

By | June 6, 2017

Data point to peaks in gene expression in the morning and evening that are distinct from day-night circadian cycles.

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image: Bone Marrow Isn’t the Only Source of Platelets

Bone Marrow Isn’t the Only Source of Platelets

By | June 1, 2017

Scientists have estimated that about half of murine platelet production occurs in the lungs.

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image: Book Excerpt from <em>Behave</em>

Book Excerpt from Behave

By | June 1, 2017

In the book’s introduction, author and neuroendocrinologist Robert Sapolsky explains his fascination with the biology of violence and other dark parts of human behavior.

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The human brain’s insular cortex is adept at registering distaste for everything from rotten fruit to unfamiliar cultures.

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image: Mammalian Jaws Evolved to Chew Sideways

Mammalian Jaws Evolved to Chew Sideways

By | June 1, 2017

Parallel evolution in jaws and teeth helped early mammals diversify their diets.

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image: Running on Empty

Running on Empty

By | June 1, 2017

Regularly taking breaks from eating—for hours or days—can trigger changes both expected, such as in metabolic dynamics and inflammation, and surprising, as in immune system function and cancer progression.

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image: Infographic: Plastics’ Effects

Infographic: Plastics’ Effects

By | June 1, 2017

Lab studies suggest that plastic pollutants in the environment could have detrimental effects on animals’ physiology.

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image: Plastic Pollutants Pervade Water and Land

Plastic Pollutants Pervade Water and Land

By | June 1, 2017

Contamination of marine and terrestrial ecosystems by microplastics is putting individual organisms at risk.

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image: Researchers Discover Salt-Loving Methanogens

Researchers Discover Salt-Loving Methanogens

By | May 26, 2017

Two previously overlooked archaeal strains fill an evolutionary gap for microbes.

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