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Genomic analysis of an oak tree that lived during Napoleon’s time supports the idea that plants somehow avoid the accumulation of mutations in their stem cells.

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A study suggests that “chief” cells in the stomach act as reserve stem cells that are activated by tissue damage and may be the long-sought source of gastric cancer.

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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: Contributors

Contributors

By | June 1, 2017

Meet some of the people featured in the June 2017 issue of The Scientist.

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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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These engineered “cells” were made from the secretions and membranes of human mesenchymal stem cells.

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See researchers' recipe for synthetic mesenchymal stem cells, which showed cardiac regenerative potential in mice.

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image: No Place to Hide

No Place to Hide

By | May 31, 2017

Environmental DNA is tracking down difficult-to-detect species, from rock snot in the U.S. to cave salamanders in Croatia.

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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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