GOTHENBURG, Sweden —Woody Allen might have coined it: the law of conservation of fragility. If part of a biological network gets stronger, some other part is bound to get weaker, new research shows. Its total fragility never gets better or worse, it just stays the same. Rather than being a statement of pessimism, this new law of conservation offers hope for finding better drug targets to treat diseases such as diabetes, heart disease and cancer, according to research presented by Hans V. Westerhoff, systems biologist at the Manchester Centre for Integrative Systems Biol...

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As researchers develop ways of reprogramming adult cells, such as skin cells, to have the same flexibility as embryonic stem cells, this new test shows that the reprogrammed stem cells are truly capable of becoming any cell in the body.

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Protein improves old rats’ ability to form new memories.

Cradle-to-grave analysis of emissions from power plants suggests that capturing and burying CO2 could have environmental costs.

Advances in gene therapy could tempt some athletes to enhance their genetic makeup, leading some researchers to work on detection methods just in case.

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Delivering small interfering RNAs, or siRNAs, to human immune cells in mice protects the cells from HIV and suggests future therapy for patients.

A new study in mice finds that plaques associated with Alzheimer’s wreak havoc on calcium’s role in cell signaling.