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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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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.

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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: 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: Hunger Hormone Slows Aging in Mice

Hunger Hormone Slows Aging in Mice

By | February 3, 2016

Signs of getting older are less common among rodents with ramped-up ghrelin production.

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image: Chat With Charlie

Chat With Charlie

By | February 1, 2016

See a preview of the app that lets you ask questions of a virtual Charles Darwin.

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image: Fighting Back

Fighting Back

By | February 1, 2016

Plants can’t run away from attackers, so they’ve evolved unique immune defenses to protect themselves.

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image: Hormone Hangover

Hormone Hangover

By | February 1, 2016

Medication to prevent prematurity in humans harms cognitive flexibility in rats.

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