The Scientist

» stem cells, culture and evolution

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image: Slumber Numbers

Slumber Numbers

By | March 1, 2016

Ideas abound for why some animal species sleep so much more than others, but definitive data are elusive.

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Speaking of Science

By | March 1, 2016

March 2016's selection of notable quotes

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image: Sugar Time

Sugar Time

By | March 1, 2016

Metabolic activity, not light, drives the circadian clock in cyanobacteria.

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image: What Lies Sleeping

What Lies Sleeping

By | March 1, 2016

Why can science still not define this most basic biological process?

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image: Who Sleeps?

Who Sleeps?

By and | March 1, 2016

Once believed to be unique to birds and mammals, sleep is found across the metazoan kingdom. Some animals, it seems, can’t live without it, though no one knows exactly why.

5 Comments

image: Week in Review: February 22–26

Week in Review: February 22–26

By | February 26, 2016

Questions about how E. coli evolves; spermatids in a dish; fighting bacteria with virus-like molecule; what drives metastasis; antibodies fight Ebola in monkeys

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image: Toward Making Sperm in the Lab

Toward Making Sperm in the Lab

By | February 25, 2016

Researchers devise a technique for creating gametes from murine embryonic stem cells.

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iPSCs and Cancer Risk

By | February 24, 2016

Reprogramming adult human cells into stem cells in vitro does not generate harmful mutations, scientists report.

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image: Similar Data, Different Conclusions

Similar Data, Different Conclusions

By | February 23, 2016

By tweaking certain conditions of a long-running experiment on E. coli, scientists found that some bacteria could be prompted to express a mutant phenotype sooner, without the “generation of new genetic information.” The resulting debate—whether the data support evolutionary theory—is more about semantics than science.

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image: Insulin-Producing Mini Stomachs

Insulin-Producing Mini Stomachs

By | February 22, 2016

Scientists grow gastric organs in vitro that can restore insulin production when transplanted into mice.

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