Research highlights: wastewater and queen-only ants

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.

00:47 A magnetic seal to stop clots forming in the heart

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

07:02 Research Highlights

Nature: Sewage systems secretly waft pollution into the air

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

11:31 Making hexagonal diamond

Research Article: Lai et al.

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