The New York Times reports on the visa crunch here in the US, leading off with a look at microRNA researcher Alena Shkumatava at the Whitehead Institute. Shkumatava "is among the several hundred thousand students who need a visa to study in the United States," the article says.

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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.