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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_](#) [**_Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday._**](#) --- Hosted on Acast. See [acast.com/privacy]( https://acast.com/privacy'>acast.com/privacy for more information.