Heart surgery with quick-setting magnetic fluid could prevent strokes

Injectable fluid safely fills area in which blood clots can form, in animal trials — plus, strong evidence that an elusive form of diamond has been made in the lab.

Research Article : Wang et al.

News and Views: Magnetic fluid offers better seal in heart-plugging medical procedure

Video: Magnetic gel injected into the heart could stop strokes

Nature: Sewage systems secretly waft pollution into the air

Nature: This ant species is composed of only queens — no workers or males

Research Article: Lai et al.

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