The probiotic bacteria engineered to treat diabetes

Genetically modified bacteria lower high blood-sugar in animal trials — plus, how to safely watch a solar eclipse.

00:45 A living diabetes treatment

Research article: Guan et al.

08:03 Research Highlights

Nature: Pumas are drivers’ guardian angels

Nature: How a steady drip-drip can erode the hardest stone

10:29 What eclipses might reveal about the Sun’s corona

Nature: Solar eclipse offers rare chance to solve Sun’s magnetic-field mysteries

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