SciLink's Tree of Science, which creates a sort of genealogy of scientists who have worked together, might be the way to find biology's equivalent of an Erdos number, blogs The Daily Transcript's Alex Palazzo. "In any case to figure out the biology equivalent we would need some sort of repository, or even better some navigational network that lets you explore any possible connection. And now we have the perfect application," writes Palazzo.

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Technology Review reports that researchers in the US have used CRISPR to modify a number of human embryos.

By introducing genes from butterfly peas and Canterbury bells, researchers in Japan have developed a blue chrysanthemum, according to NPR.

Plant researchers plan to sequence some 10,000 samples that represent the major plant clades, ScienceInsider reports.

In Nature this week: a Danish reference genome, and more.