Kavli Institute

The publication closely follows a paper by a Dutch group that also showed DNA traversing a nanopore. The Penn team used a method called chemical vapor deposition to grow the graphene on a copper substrate, while the Dutch team used an exfoliation approach to construct its nanopore.

The team's next step is to use the graphene as not only the membrane, but also as the electrodes, and to slow down the DNA so they can read each individual base as it passes through the pore.

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.