In the Pipeline's Derek Lowe says there are several reasons why the credibility of the scientific literature has been called into question lately, and it has to do with factors both in and out of the research community. In the US, the left/right political divide is a problem that's getting bigger, with cultural and policy disagreements often getting entangled with scientific issues like evolution and climate change.

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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.