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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: Mutations Not Tied to Metastasis

Mutations Not Tied to Metastasis

By | 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.

3 Comments

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: Adjustable Brain Cells

Adjustable Brain Cells

By | February 18, 2016

Neighboring neurons can manipulate astrocytes. 

1 Comment

image: Stem Cells to Blame for Hair Loss?

Stem Cells to Blame for Hair Loss?

By | February 8, 2016

Two new studies point to factors in hair follicle stem cells as players in age-related hair loss.

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image: Aging Shrinks Chromosomes

Aging Shrinks Chromosomes

By | February 5, 2016

A study on human cells reveals how cellular aging affects the 3-D architecture of chromosomes.

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image: Mysterious Mechanisms of Cardiac Cell Therapy

Mysterious Mechanisms of Cardiac Cell Therapy

By | February 4, 2016

Injections of progenitor cells into damaged rat hearts may improve function, but not because the implants themselves are creating new muscle.

1 Comment

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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