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image: Slumber Numbers

Slumber Numbers

By Jef Akst | 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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image: Sugar Time

Sugar Time

By Catherine Offord | 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 Philippe Mourrain | March 1, 2016

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

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image: Who Sleeps?

Who Sleeps?

By Jerome Siegel and The Scientist Staff | 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.

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image: Week in Review: February 22–26

Week in Review: February 22–26

By Jef Akst | 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: Mutations Not Tied to Metastasis

Mutations Not Tied to Metastasis

By Kerry Grens | February 25, 2016

Clinical cases link immune changes to a cancer’s spread through the body, but find no role for so-called “driver” mutations.

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image: Single Antibody Protects Macaques from Ebola

Single Antibody Protects Macaques from Ebola

By Amanda B. Keener | February 25, 2016

The “just right” binding properties of a monoclonal antibody from an Ebolavirus survivor help it neutralize the virus.

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image: Anti-Inflammatory Drugs as Antivenom?

Anti-Inflammatory Drugs as Antivenom?

By Bob Grant | February 24, 2016

Compounds typically used to calm the immune system can prevent death from scorpion venom in mice, researchers report.

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image: Similar Data, Different Conclusions

Similar Data, Different Conclusions

By Ashley P. Taylor | 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: Premature Assault?

Premature Assault?

By Jef Akst | February 9, 2016

Plants may trick bacteria into attacking before the microbial population reaches a critical size, allowing the plants to successfully defend the weak invasion.

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