Nature Podcast

00:46 Millimetre-sized pacemaker fits inside syringeResearchers have developed a tiny, temporary pacemaker that dissolves when no longer needed, helping to overcome some of the challenges associated with current devices. Temporary pacemakers are often required after heart surgery but implanting them can require invasive procedures. This new device is injectable, requires no external power and is controlled using light shone through the skin. The tiny pacemaker has shown promise in animal and heart models, and the team think it could also be used in other situations where electrical stimulation is needed, like the brain.Research Article: Zhang et al.08:19 Research HighlightsMeasurements show that global warming is causing lakes to lose their oxygen, and a massive, 30-year analysis showing that a diet of plant-rich foods is associated with healthy ageingResearch Highlight: Life-giving oxygen is wafting out of lakes worldwideResearch Highlight: The best foods for healthy ageing ― and the worst10:2